Paeoniflorin is a white fine powder chemical compound with Molecular Formula:C23H28O11 and Molecular Weight: 480.47 . It is one of the major constituents of a herbal medicine derived from Paeonia lactiflora. It can also be isolated from the fresh water fern Salvinia molesta.In Paeonia, it can form new compounds with addition of phenolic substituents. Paeoniflorin has antiandrogenic propertie, the CAS Registry Number is 23180-57-6.
Paeoniflorin, the principal component of Paeoniae Radix prescribed in traditional Chinese medicine, has been reported to exhibit many pharmacological effects including protection against ischemic injury.
However, the mechanisms underlying the protective effects of Paeoniflorin(CAS NO:23180-57-6) on cerebral ischemia are still under investigation. The present study showed that Paeoniflorin treatment for 14 days could significantly inhibit transient middle cerebral artery occlusion (MCAO)-induced over-activation of astrocytes and microglia, and prevented up-regulations of pro-inflamamtory mediators in plasma and brain.
Further study demonstrated that chronic treatment with Paeoniflorin suppressed the activations of JNK and p38 MAPK, but enhanced ERK activation. And PF could reverse ischemia-induced activation of NF-κB signaling pathway. Moreover, our in vitro study revealed that PF treatment protected against TNFα-induced cell apoptosis and neuronal loss.
Taken together, the present study demonstrates that Paeoniflorin produces a delayed protection in the ischemia-injured rats via inhibiting MAPKs/NF-κB mediated peripheral and cerebral inflammatory response. Our study reveals that PF might be a potential neuroprotective agent for stroke.
We demonstrated that Paeoniflorin is an effective compound in the modulation of autophagic activity. Treatment with MPP+ significantly inhibited autophagy and induced apoptosis in PC12 cells. However, co-treatment with Paeoniflorin upregulated the autophagy and clearly showed neuroprotective effects.
In addition, the CMA pathway was activated as a compensatory mechanism, while Paeoniflorin efficiently maintained the CMA activity near the normal range. We also exposed PC12 cells to an acidic medium, since acidosis is a common cause of mitochondrial dysfunction and neuron degeneration.
Similarly, the deficiency of autophagy and the overactivity of CMA were both attenuated by Paeoniflorin. Thus, the key finding of the present study was that Paeoniflorin potently protected PC12 cells against MPP+ or acidosis-induced injury by upregulating the autophagic pathway.
In summary, the main findings of this study are: (1) Paeoniflorin and Ami both potently protected PC12 cells against MPP+ or acidosis induced injury by upregulating the autophagic pathway; (2) Paeoniflorin reduced calcium in flux by inhibiting ASIC1a channels; (3) the activity of ASICs altered the function of ALP.
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2014年1月25日星期六
Strontium carbonate is an important Industrial raw material
Strontium carbonate is a white, odorless, tasteless powder with Molecular Formula:SrCO3 and Molecular Weight:147.63. Being a carbonate, it is hard to dissolve in water, slightly in ammonia liquid but very soluble in ammonium chloride.The solubility is increased significantly if the water is saturated with carbon dioxide, to 1 part in 1,000. It is soluble in dilute acids. We should store it in a tightly sealed container in a cool, dry location. Keep tightly sealed when not in use. The CAS Registry Number is 1633-05-2.
The most common use is as an inexpensive colorant in fireworks. Strontium and its salts emit a brilliant red color in flame. Unlike other strontium salts, the carbonate salt is generally preferred because of its cost and the fact that it is not hygroscopic. Its ability to neutralize acid is also very helpful in pyrotechnics. Another similar application is in road flares.
Strontium carbonate(CAS NO: 1633-05-2) is used for electronic applications. It is used for manufacturing CTV to absorb electrons resulting from the cathode. Strontium carbonate is used to make strontium ferrite (Sr4Fe4O11). Strontium ferrite magnets are brittle, thick and strong.
Strontium ferrite magnets have high chemical and thermal reactivity, high coercive force and are inert chemically. They are not affected by high temperatures and do not react with chemical solvents. They are resistant to corrosion and can operate optimally between minus 40 Celsius to plus 250 Celsius. Strontium ferrite magnets are used in crafts, toys, loudspeakers, magnetic therapy, novelties, magnetic couplings, holding-magnet systems and electrical motors.
Strontium carbonate is used extensively in pyrotechnics. Strontium salts burn with a bright red flame and is commonly used as a colorant to impart a bright red flame to fireworks. It is able to effectively neutralize acids in chlorate based firework compositions.
Strontium carbonate based pyrotechnics devices are used in both nonmilitary and military applications. Nonmilitary applications include fireworks and warning devices. Military applications that contain strontium carbonate include marine distress signals, military flares and tracer ammunition.
Strontium carbonate, among other things, is used for manufacturing ferrite magnets that serve to extract strontium ferrite. Its main application is the production of glass for cathode ray tubes, better known as (color) television tubes. Since strontium carbonate has a relatively large atomic radius, it absorbs the X-radiation that occurs in the tubes. Through addition of SrCO3 and other compounds, the X-radiation disappears almost completely.
Strontium carbonate is also used in glazings. Pyrotechnics rely on the chromophoric salts of strontium to give flames their crimson color. In medicine, strontium was formerly used sometimes to treat schizophrenia.
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The most common use is as an inexpensive colorant in fireworks. Strontium and its salts emit a brilliant red color in flame. Unlike other strontium salts, the carbonate salt is generally preferred because of its cost and the fact that it is not hygroscopic. Its ability to neutralize acid is also very helpful in pyrotechnics. Another similar application is in road flares.
Strontium carbonate(CAS NO: 1633-05-2) is used for electronic applications. It is used for manufacturing CTV to absorb electrons resulting from the cathode. Strontium carbonate is used to make strontium ferrite (Sr4Fe4O11). Strontium ferrite magnets are brittle, thick and strong.
Strontium ferrite magnets have high chemical and thermal reactivity, high coercive force and are inert chemically. They are not affected by high temperatures and do not react with chemical solvents. They are resistant to corrosion and can operate optimally between minus 40 Celsius to plus 250 Celsius. Strontium ferrite magnets are used in crafts, toys, loudspeakers, magnetic therapy, novelties, magnetic couplings, holding-magnet systems and electrical motors.
Strontium carbonate is used extensively in pyrotechnics. Strontium salts burn with a bright red flame and is commonly used as a colorant to impart a bright red flame to fireworks. It is able to effectively neutralize acids in chlorate based firework compositions.
Strontium carbonate based pyrotechnics devices are used in both nonmilitary and military applications. Nonmilitary applications include fireworks and warning devices. Military applications that contain strontium carbonate include marine distress signals, military flares and tracer ammunition.
Strontium carbonate, among other things, is used for manufacturing ferrite magnets that serve to extract strontium ferrite. Its main application is the production of glass for cathode ray tubes, better known as (color) television tubes. Since strontium carbonate has a relatively large atomic radius, it absorbs the X-radiation that occurs in the tubes. Through addition of SrCO3 and other compounds, the X-radiation disappears almost completely.
Strontium carbonate is also used in glazings. Pyrotechnics rely on the chromophoric salts of strontium to give flames their crimson color. In medicine, strontium was formerly used sometimes to treat schizophrenia.
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2014年1月24日星期五
Phenyl ether has some effects for our health
Phenyl ether is the organic compound with the formula O(C6H5)2, the Molecular Weight 170.21. It is a kind of clear pale yellowish liquid after melting, also known as Diphenyl ether and Ethylene glycol phenyl ether.It has good coalescing ability, a high polymer solvency, a low evaporation rate, and a wide range of applications. The CAS Registry Number is 101-84-8.
The main application of Phenyl ether is as a eutectic mixture with biphenyl, used as a heat transfer medium. Such a mixture is well-suited for heat transfer applications because of the relatively large temperature range of its liquid state. It is a starting material in the production of phenoxathiin via the Ferrario reaction.Phenoxathiin is used in polyamide and polyimide production. It is also used as a processing aid in the production of polyesters.
As an important Industrial raw material, Phenyl ether(CAS NO:101-84-8) also has some effects for our health, now let me show you the health information about Phenyl ether.
Eye contact with ethylene glycol, phenyl ether may cause moderate irritation and corneal injury. Prolonged skin exposure is unlikely to cause significant irritation. A more severe response may result on covered skin (under clothing, gloves). Prolonged skin contact is unlikely to result in absorption of harmful amounts. However, repeated skin contact may result in absorption of harmful amounts.
In animal studies, excessive exposure caused hemolysis (breakage of red blood cells) and secondary effects to the kidneys and liver. Hemolysis impairs the blood's ability to transport oxygen and excessive exposure to ethylene glycol phenyl ether can aggravate preexisting diseases of the kidneys, liver or blood (like anemia). However, human red blood cells have been shown to be significantly less susceptible to hemolysis than those of the test animals.
At room temperature, vapor exposure is minimal because of this material’s low volatility. However, vapor from heated material may cause eye and nose irritation and cause drowsiness. phenyl ether has a low toxicity if swallowed Phenyl ether. Small amounts swallowed incidental to normal handling operations are not likely to cause injury. However, swallowing larger amounts Phenyl ether may cause injury.
In animal studies, effects from repeated exposure have been reported on the red blood cells, kidney, liver, thyroid, and respiratory tract. Phenyl ether did not cause birth defects or other effects in the fetus, even at doses that caused toxic effects in the mother. Repeated exposures had no effect on reproductive organs. In vitro genetic toxicity and animal genetic toxicity studies were both negative.
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The main application of Phenyl ether is as a eutectic mixture with biphenyl, used as a heat transfer medium. Such a mixture is well-suited for heat transfer applications because of the relatively large temperature range of its liquid state. It is a starting material in the production of phenoxathiin via the Ferrario reaction.Phenoxathiin is used in polyamide and polyimide production. It is also used as a processing aid in the production of polyesters.
As an important Industrial raw material, Phenyl ether(CAS NO:101-84-8) also has some effects for our health, now let me show you the health information about Phenyl ether.
Eye contact with ethylene glycol, phenyl ether may cause moderate irritation and corneal injury. Prolonged skin exposure is unlikely to cause significant irritation. A more severe response may result on covered skin (under clothing, gloves). Prolonged skin contact is unlikely to result in absorption of harmful amounts. However, repeated skin contact may result in absorption of harmful amounts.
In animal studies, excessive exposure caused hemolysis (breakage of red blood cells) and secondary effects to the kidneys and liver. Hemolysis impairs the blood's ability to transport oxygen and excessive exposure to ethylene glycol phenyl ether can aggravate preexisting diseases of the kidneys, liver or blood (like anemia). However, human red blood cells have been shown to be significantly less susceptible to hemolysis than those of the test animals.
At room temperature, vapor exposure is minimal because of this material’s low volatility. However, vapor from heated material may cause eye and nose irritation and cause drowsiness. phenyl ether has a low toxicity if swallowed Phenyl ether. Small amounts swallowed incidental to normal handling operations are not likely to cause injury. However, swallowing larger amounts Phenyl ether may cause injury.
In animal studies, effects from repeated exposure have been reported on the red blood cells, kidney, liver, thyroid, and respiratory tract. Phenyl ether did not cause birth defects or other effects in the fetus, even at doses that caused toxic effects in the mother. Repeated exposures had no effect on reproductive organs. In vitro genetic toxicity and animal genetic toxicity studies were both negative.
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2014年1月23日星期四
Permethrin is a common synthetic chemical, widely used as an insecticide, acaricide, and insect repellent. It is a kind of colourless crystals (but the technical productis normally supplied as a pale brown liquid). The Molecular Formula is C21H20Cl2O3, Molecular Weight is 391.29. It belongs to the family of synthetic chemicals called pyrethroids and functions as a neurotoxin, affecting neuron membranes by prolonging sodium channel activation. The CAS Registry Number is 52645-53-1.
It is stable,incompatible with strong oxidising agents, and insoluble in water. It is used as synthetic pyrethroid insectide, more stable to light and at least as active as the natural pyrethrins and with low mammalian toxicity.
Permethrin(CAS NO:52645-53-1) is also used widely in medicine. It was first registered and tolerances established in the United States in 1979 for use on cotton. The registration was made conditional due to the need for additional toxicology and ecological effects data to fully evaluate carcinogenicity and aquatic risk, respectively.
After additional toxicity data were reviewed, EPA concluded that permethrin was a weak carcinogen. Further, laboratory studies indicated that permethrin was highly toxic to fish and aquatic invertebrates; therefore, it was classified as Restricted Use pesticide for the cotton use. From 1982 to 1989, an additional 55 + crop tolerances were approved for a wide variety of crops, including various fruits and vegetables, meat, milk and eggs.
Permethrin is used to treat scabies in adults and children 2 months of age and older. Over-the-counter permethrin is used to treat lice in adults and children 2 months of age and older. Permethrin is in a class of medications called scabicides and pediculicides. It works by killing lice and mites.
Permethrin can be used in public health mosquito abatement programs and on a variety of food or feed crops and livestock; or in structures and buildings, including livestock housing and food-handling establishments. Permethrin can also be used in numerous residential sites, both indoor and outdoor, and on pets and clothing. When permethrin is used on large areas like crops, nurseries, and sod farms it is considered a restricted use pesticide.
For other applications, it is considered a general use pesiticide. Formulations of permethrin used for treatment of head lice and scabies on humans are available, but these are considered pharmaceuticals, which are regulated by the United States Food and Drug Administration (FDA). 2 Uses for individual permethrin products vary widely. Always read and follow the label when applying pesticide products.
If you need take Permethrin, you should pay more attention to it. Learning more health information, properties or suppliers about Permethrin, you can access Guidechem.
It is stable,incompatible with strong oxidising agents, and insoluble in water. It is used as synthetic pyrethroid insectide, more stable to light and at least as active as the natural pyrethrins and with low mammalian toxicity.
Permethrin(CAS NO:52645-53-1) is also used widely in medicine. It was first registered and tolerances established in the United States in 1979 for use on cotton. The registration was made conditional due to the need for additional toxicology and ecological effects data to fully evaluate carcinogenicity and aquatic risk, respectively.
After additional toxicity data were reviewed, EPA concluded that permethrin was a weak carcinogen. Further, laboratory studies indicated that permethrin was highly toxic to fish and aquatic invertebrates; therefore, it was classified as Restricted Use pesticide for the cotton use. From 1982 to 1989, an additional 55 + crop tolerances were approved for a wide variety of crops, including various fruits and vegetables, meat, milk and eggs.
Permethrin is used to treat scabies in adults and children 2 months of age and older. Over-the-counter permethrin is used to treat lice in adults and children 2 months of age and older. Permethrin is in a class of medications called scabicides and pediculicides. It works by killing lice and mites.
Permethrin can be used in public health mosquito abatement programs and on a variety of food or feed crops and livestock; or in structures and buildings, including livestock housing and food-handling establishments. Permethrin can also be used in numerous residential sites, both indoor and outdoor, and on pets and clothing. When permethrin is used on large areas like crops, nurseries, and sod farms it is considered a restricted use pesticide.
For other applications, it is considered a general use pesiticide. Formulations of permethrin used for treatment of head lice and scabies on humans are available, but these are considered pharmaceuticals, which are regulated by the United States Food and Drug Administration (FDA). 2 Uses for individual permethrin products vary widely. Always read and follow the label when applying pesticide products.
If you need take Permethrin, you should pay more attention to it. Learning more health information, properties or suppliers about Permethrin, you can access Guidechem.
Before taking Etodolac
Etodolac is a nonsteroidal anti-inflammatory drug. The U.S. Food and Drug Administration approved etodolac in January 1991. It is a kind of crystalline solids with Molecular Formula:C17H21NO3 and Molecular Weight:287.36. It is slightly soluble, stable at normal temperatures and pressures. The CAS Registry Number is 41340-25-4.
Etodolac is a non-steroidal anti-inflammatory drug. Non-steroidal anti-inflammatory drug (NSAID) that selectively inhibits cyclooxygenase-2 (COX-2) (IC 50 values are 53 and >100μM for COX-2 and COX-1 respectively). Displays anti-inflammatory effects in both adjuvant arthritic and normal rats.
Etodolac(CAS NO: 41340-25-4) is used for the management of mild to moderate pain, fever, and inflammation. They work by reducing the levels of prostaglandins, which are chemicals that are responsible for pain and the fever and tenderness that occur with inflammation. Etodolac blocks the enzyme that makes prostaglandins, resulting in lower concentrations of prostaglandins. As a consequence, inflammation, pain and fever are reduced.
Post-marketing studies demonstrated that etodolac inhibition of cyclooxygenase is somewhat COX-2 selective similar to celecoxib and other "COX-2 inhibitors." Unlike rofecoxib, both etodolac and celecoxib can fully inhibit COX-1 and are designated as having "preferential selectivity" toward COX-2. The (inactive against COX) r-enantiomer of etodolac inhibits beta-catenin levels in hepatoma cells.
Etodolac is a nonsteroidal anti-inflammatory drug (NSAIDs). It works by reducing hormones that cause inflammation and pain in the body. NSAIDs treat the symptoms of pain and inflammation. They do not treat the disease that causes those symptoms. It is used to treat pain or inflammation caused by arthritis or osteoarthritis. It may also be used for purposes other than those listed in this medication guide.
Take Etodolac by mouth as directed by your doctor, usually 2 or 3 times a day with a full glass of water (8 ounces/240 milliliters). Do not lie down for at least 10 minutes after taking this drug. To prevent stomach upset, take this medication with food, milk, or an antacid.
The dosage is based on your medical condition and response to treatment. To reduce your risk of stomach bleeding and other side effects, take Etodolac at the lowest effective dose for the shortest possible time. Do not increase your dose or take it more often than directed. For ongoing conditions such as arthritis, continue taking Etodolac as directed by your doctor.
If you are taking Etodolac "as needed", remember that pain medications work best if they are used as the first signs of pain occur. If you wait until the pain has worsened, the medication may not work as well.
If you need take Etodolac, you should pay more attention to it. Learning more health information, properties or suppliers about Etodolac, you can access Guidechem.
Etodolac is a non-steroidal anti-inflammatory drug. Non-steroidal anti-inflammatory drug (NSAID) that selectively inhibits cyclooxygenase-2 (COX-2) (IC 50 values are 53 and >100μM for COX-2 and COX-1 respectively). Displays anti-inflammatory effects in both adjuvant arthritic and normal rats.
Etodolac(CAS NO: 41340-25-4) is used for the management of mild to moderate pain, fever, and inflammation. They work by reducing the levels of prostaglandins, which are chemicals that are responsible for pain and the fever and tenderness that occur with inflammation. Etodolac blocks the enzyme that makes prostaglandins, resulting in lower concentrations of prostaglandins. As a consequence, inflammation, pain and fever are reduced.
Post-marketing studies demonstrated that etodolac inhibition of cyclooxygenase is somewhat COX-2 selective similar to celecoxib and other "COX-2 inhibitors." Unlike rofecoxib, both etodolac and celecoxib can fully inhibit COX-1 and are designated as having "preferential selectivity" toward COX-2. The (inactive against COX) r-enantiomer of etodolac inhibits beta-catenin levels in hepatoma cells.
Etodolac is a nonsteroidal anti-inflammatory drug (NSAIDs). It works by reducing hormones that cause inflammation and pain in the body. NSAIDs treat the symptoms of pain and inflammation. They do not treat the disease that causes those symptoms. It is used to treat pain or inflammation caused by arthritis or osteoarthritis. It may also be used for purposes other than those listed in this medication guide.
Take Etodolac by mouth as directed by your doctor, usually 2 or 3 times a day with a full glass of water (8 ounces/240 milliliters). Do not lie down for at least 10 minutes after taking this drug. To prevent stomach upset, take this medication with food, milk, or an antacid.
The dosage is based on your medical condition and response to treatment. To reduce your risk of stomach bleeding and other side effects, take Etodolac at the lowest effective dose for the shortest possible time. Do not increase your dose or take it more often than directed. For ongoing conditions such as arthritis, continue taking Etodolac as directed by your doctor.
If you are taking Etodolac "as needed", remember that pain medications work best if they are used as the first signs of pain occur. If you wait until the pain has worsened, the medication may not work as well.
If you need take Etodolac, you should pay more attention to it. Learning more health information, properties or suppliers about Etodolac, you can access Guidechem.
2014年1月22日星期三
Health information of 2-Ethoxyethanol
2-Ethoxyethanol, also known by the trademark Cellosolve or ethyl cellosolve, is a solvent used widely in commercial and industrial applications. It is a clear, colorless, nearly odorless liquid that is miscible with water, ethanol, diethyl ether, acetone, and ethyl acetate. The Molecular Formula is C4H10O2, Molecular Weight is 90.12, and CAS Registry Number is 110-80-5.
It is miscible with water. Readily forms explosive mixtures with air - note the wide explosion range. Vapour may travel considerable distance to a source of ignition. It is stable,flammable, incompatible with strong acids, strong bases, strong oxidizing agents, aluminium, alkalies.
2-Ethoxyethanol can be manufactured by the reaction of ethylene oxide with ethanol.As with other glycol ethers, 2-ethoxyethanol has the useful property of being able to dissolve chemically diverse compounds. It will dissolve oils, resins, grease, waxes, nitrocellulose, and lacquers. This is an ideal property as a multi-purpose cleaner, and, therefore, 2-ethoxyethanol is used in products, such as varnish removers and degreasing solutions.
In the health assessment prepared for 2-ethoxyethanol(CAS NO:110-80-5) under CEPA, a screening approach was adopted, because of the extremely limited data upon which to base estimates of population exposure, as well as limited information that the use of the substance may have declined in recent years. Therefore, available physiologically based pharmacokinetic models were considered outside the scope of the objectives of the CEPA screening.
It was suggested that a discussion be included on physiologically based pharmacokinetic models that have been developed for 2-ethoxyethanol, and that such models be incorporated into the human health risk assessment.
These studies are described in the Supporting Documentation but are not appropriate for inclusion in the brief assimilated summary included in the Assessment Report.It was suggested that information from dermal penetration assays described in the recent Patty6s Industrial Hygiene be included in the assessment.
Data on the presence of 2-ethoxyethanol in consumer products have been re-examined, and revisions were made to the assessment report, as considered appropriate. For example, estimates of exposure from several products have been deleted. In addition, the text has been clarified as follows: “Limited available recent data do not indicate that 2-ethoxyethanol is commonly present in consumer products in Canada”.
The order of presentation of available data on composition of consumer products has been modified to emphasize the most recent (though limited) data for Canada at the outset. The conclusion of not considered to be "toxic" may be reconsidered upon acquisition of additional information on the use of 2-ethoxyethanol in consumer products in Canada.
The comment was made that information cited in the assessment report concerning the presence of 2-ethoxyethanol in consumer products was incorrect and outdated, and that there is no current information to support the use of 2-ethoxyethanol in consumer products.
Want to learn more information about 2-Ethoxyethanol, you can access to our Guidechem. Guidechem provide the most convenient conditions for the international buyers and let these leads benefit all the business people.
It is miscible with water. Readily forms explosive mixtures with air - note the wide explosion range. Vapour may travel considerable distance to a source of ignition. It is stable,flammable, incompatible with strong acids, strong bases, strong oxidizing agents, aluminium, alkalies.
2-Ethoxyethanol can be manufactured by the reaction of ethylene oxide with ethanol.As with other glycol ethers, 2-ethoxyethanol has the useful property of being able to dissolve chemically diverse compounds. It will dissolve oils, resins, grease, waxes, nitrocellulose, and lacquers. This is an ideal property as a multi-purpose cleaner, and, therefore, 2-ethoxyethanol is used in products, such as varnish removers and degreasing solutions.
In the health assessment prepared for 2-ethoxyethanol(CAS NO:110-80-5) under CEPA, a screening approach was adopted, because of the extremely limited data upon which to base estimates of population exposure, as well as limited information that the use of the substance may have declined in recent years. Therefore, available physiologically based pharmacokinetic models were considered outside the scope of the objectives of the CEPA screening.
It was suggested that a discussion be included on physiologically based pharmacokinetic models that have been developed for 2-ethoxyethanol, and that such models be incorporated into the human health risk assessment.
These studies are described in the Supporting Documentation but are not appropriate for inclusion in the brief assimilated summary included in the Assessment Report.It was suggested that information from dermal penetration assays described in the recent Patty6s Industrial Hygiene be included in the assessment.
Data on the presence of 2-ethoxyethanol in consumer products have been re-examined, and revisions were made to the assessment report, as considered appropriate. For example, estimates of exposure from several products have been deleted. In addition, the text has been clarified as follows: “Limited available recent data do not indicate that 2-ethoxyethanol is commonly present in consumer products in Canada”.
The order of presentation of available data on composition of consumer products has been modified to emphasize the most recent (though limited) data for Canada at the outset. The conclusion of not considered to be "toxic" may be reconsidered upon acquisition of additional information on the use of 2-ethoxyethanol in consumer products in Canada.
The comment was made that information cited in the assessment report concerning the presence of 2-ethoxyethanol in consumer products was incorrect and outdated, and that there is no current information to support the use of 2-ethoxyethanol in consumer products.
Want to learn more information about 2-Ethoxyethanol, you can access to our Guidechem. Guidechem provide the most convenient conditions for the international buyers and let these leads benefit all the business people.
Summary the usages of Acetophenone
Acetophenone is the organic compound with the Molecular Formula C8H8O. It is the simplest aromatic ketone. This colourless, viscous liquid is a precursor to useful resins and fragrances. It is stable, incompatible with strong oxidizing agents, strong bases, strong reducing agents and combustible. The Molecular Weight is 120.15, EINECS is 202-708-7 and CAS Registry Number is 98-86-2.
It can be obtained by a variety of methods. In industry, acetophenone is recovered as a by-product of the oxidation of ethylbenzene, which mainly gives ethylbenzene hydroperoxide for use in the production of propylene oxide.
Acetophenone(CAS NO:98-86-2) is a useful and very common synthetic precursor. It’s one of a relatively few chemicals that aren’t used as a solvent that many labs keep around in liter bottles. The main reason I like it, though, is that it smells wonderful.
Summary the usages of Acetophenone: In perfumery to impart an orange-blossom-like odor, catalyst for polymerization of olefins, in organic synthesis, esp as photosensitizer.It is used in perfumery. Like many single chemicals, its smell is puzzlingly hard to pin down smells, such as coffee, where you definitively say that’s it,are very often mixtures. I’d describe it as something like orange blossom with a bit of artificial cherry/almond.
Acetophenone also is of note for its use in Luca Turin’s experiment-a controversial dark-horse theory of olfaction that says vibrational levels of a molecule hold predictive power for odorant character. In one experiment, he found that he could order a perdeuterated acetophenone. Turin and some others insist they smell different, others insist isotope-exchanged compounds are indistinguishable.
When used in pharmaceutical and related areas, it is a raw material for the synthesis of some pharmaceuticals, examples include dextropropoxyphene and phenylpropanolamine. When it used as Niche, is an ingredient in fragrances that resemble almond, cherry, honeysuckle, jasmine, and strawberry. It is used in chewing gum. It is also listed as an approved excipient by the U.S. FDA. In a 1994 report released by five top cigarette companies in the U.S., acetophenone was listed as one of the 599 additives to cigarettes.
In instructional laboratories, acetophenone is converted to styrene in a two step process that illustrates the reduction of carbonyls and the dehydration of alcohols.A similar process is used industrially but the hydrogenation step to 1-phenylethanol is done over a copper catalyst. Being prochiral, acetophenone is also a popular test substrate for asymmetric transfer hydrogenation experiments.
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It can be obtained by a variety of methods. In industry, acetophenone is recovered as a by-product of the oxidation of ethylbenzene, which mainly gives ethylbenzene hydroperoxide for use in the production of propylene oxide.
Acetophenone(CAS NO:98-86-2) is a useful and very common synthetic precursor. It’s one of a relatively few chemicals that aren’t used as a solvent that many labs keep around in liter bottles. The main reason I like it, though, is that it smells wonderful.
Summary the usages of Acetophenone: In perfumery to impart an orange-blossom-like odor, catalyst for polymerization of olefins, in organic synthesis, esp as photosensitizer.It is used in perfumery. Like many single chemicals, its smell is puzzlingly hard to pin down smells, such as coffee, where you definitively say that’s it,are very often mixtures. I’d describe it as something like orange blossom with a bit of artificial cherry/almond.
Acetophenone also is of note for its use in Luca Turin’s experiment-a controversial dark-horse theory of olfaction that says vibrational levels of a molecule hold predictive power for odorant character. In one experiment, he found that he could order a perdeuterated acetophenone. Turin and some others insist they smell different, others insist isotope-exchanged compounds are indistinguishable.
When used in pharmaceutical and related areas, it is a raw material for the synthesis of some pharmaceuticals, examples include dextropropoxyphene and phenylpropanolamine. When it used as Niche, is an ingredient in fragrances that resemble almond, cherry, honeysuckle, jasmine, and strawberry. It is used in chewing gum. It is also listed as an approved excipient by the U.S. FDA. In a 1994 report released by five top cigarette companies in the U.S., acetophenone was listed as one of the 599 additives to cigarettes.
In instructional laboratories, acetophenone is converted to styrene in a two step process that illustrates the reduction of carbonyls and the dehydration of alcohols.A similar process is used industrially but the hydrogenation step to 1-phenylethanol is done over a copper catalyst. Being prochiral, acetophenone is also a popular test substrate for asymmetric transfer hydrogenation experiments.
Want to learn more information about Acetophenone, you can access to our guidechem. Guidechem is just a place for you to look for some chemicals.
2014年1月21日星期二
Nevirapine can kills HIV virus
Nevirapine is a white or off-white crystalline powder, also marketed under the trade name Viramune. It is a non-nucleoside reverse transcriptase inhibitor used to treat HIV-1 infection and AIDS. The Molecular Formula of Nevirapine is C15H14N4O, Molecular Weight is 266.3 and CAS Registry Number is 129618-40-2.
Nevirapine was discovered by Hargrave et al. at Boehringer Ingelheim Pharmaceuticals, Inc., one of the Boehringer Ingelheim group of companies. It is covered by U.S. Patent 5,366,972 and corresponding foreign patents. Nevirapine was the first NNRTI approved by the U.S. Food and Drug Administration (FDA). It was approved June 21, 1996 for adults and September 11, 1998 for children. It was also approved in Europe in 1997.
Nevirapine(CAS NO: 129618-40-2) is an oral medication that is used for the treatment of infections with the human immunodeficiency virus (HIV). It is in a class of drugs called reverse transcriptase inhibitors that also includes zalcitabine (Hivid), zidovudine (Retrovir), didanosine (Videx), and lamivudine (Epivir). It is in a subclass of protease inhibitors called nonnucleoside protease inhibitors that includes efavirenz (Sustiva) and delavirdine (Rescriptor). During infection with HIV, the HIV virus multiplies within the body's cells.
The newly-formed viruses then are released from the cells and spread throughout the body where they infect other cells. In this manner, the infection spreads to new, uninfected cells that the body is continually producing, and HIV infection is perpetuated. When producing new viruses, the HIV virus must manufacture new DNA for each virus. Reverse transcriptase is the enzyme that the virus uses to form this new DNA.
Nevirapine directly inhibits the activity of reverse transcriptase and blocks the production of DNA and new viruses. Nevirapine does not kill existing HIV virus and it is not a cure for HIV. The FDA approved nevirapine in September 1996.
Longer nevirapine prophylaxis to prevent postnatal HIV infection appears to benefit children, but the gains seem to disappear unless they are treated during the entire breastfeeding period, researchers said here at the Conference on Retroviruses and Opportunistic Infections.
Women were advised to breastfeed the children exclusively through 6 months and then stop, although many continued after 6 months. The median time for cessation of breastfeeding was 6.2 months. We have to treat children with nevirapine prophylaxis as long as they are breastfeeding.
Abrams, who moderated the press briefing at which Fowler discussed the 18-month results of her study, noted, "Women who required treatment were among the women at greatest risk of transmitting virus to their children through breastfeeding. Even if the mother is under treatment, the recommendations are still to deliver nevirapine to the child for 6 weeks.
If you need take Nevirapine, you should pay more attention to it. Learning more health information, properties or suppliers about Nevirapine, you can access Guidechem.
2014年1月20日星期一
Study on the effects of (-)-Epigallocatechin gallat on Cancer
(-)-Epigallocatechin gallat is also known as epigallocatechin-3-gallate, is the ester of epigallocatechin and gallic acid, and is a type of catechin, we also call it EGCG. It is stable, but may be light sensitive and incompatible with strong oxidizing agents. The Molecular Formula is C22H18O11, Molecular Weight is 458.37, and CAS Registry Number is 989-51-5.
It is the most abundant catechin in tea and is a potent antioxidant that may have therapeutic applications in the treatment of many disorders (e.g. cancer). It is found mainly in green tea and, in smaller quantities, black tea; during black tea production, the catechins are mostly converted to theaflavins and thearubigins, and theabrownins.
(-)-Epigallocatechin gallate (CAS NO:989-51-5) has been used for a tumor-inhibiting constituent of green tea for altering the cleavage of amyloid precursor protein, decreasing production of amaloid- and amaloid plaques in mice.
It has been the subject of a number of studies investigating its potential use as a therapeutic for a broad range of disorders: HIV, Cancer, Chronic fatigue syndrome, Sjögren's syndrome, Endometriosis, Spinal muscular atrophy, Neurodegeneration, Periapical lesions, Cannabinoid 1 receptor, CB1 receptor Activity.
(-)-Epigallocatechin gallat studies have shown that intake of tea catechins is associated with a lower risk of cardiovascular disease. The antioxidative activity of tea-derived catechins has been extensively studied. Reports have shown that green tea extract intake is associated with increased weight loss due to diet-induced thermogenesis, which is generally attributed to the catechin (-)-Epigallocatechin gallat.
Green tea is a popular drink consumed daily by millions of people around the world. Previous studies have shown that some polyphenol compounds from green tea possess anticancer activities. However, systemic evaluation was limited. We determined the cancer chemopreventive potentials of 10 representative polyphenols and explored their structure-activity relationship.
The effect of the 10 polyphenol compounds on the proliferation of HCT-116 and SW-480 human colorectal cancer cells was evaluated using an MTS assay. Cell cycle distribution and apoptotic effects were analyzed by flow cytometry after staining with propidium iodide (PI)/RNase or annexin V/PI. Among the 10 polyphenols, EGCG showed the most potent antiproliferative effects, and significantly induced cell cycle arrest in the G1 phase and cell apoptosis.
When the relationship between chemical structure and anticancer activity was examined, C and EC did not show antiproliferative effects, and GA showed some antiproliferative effects. When C and EC esterified with GA to produce CG and ECG, the antiproliferative effects were increased significantly.
A similar relationship was found between EGC and (-)-Epigallocatechin gallat. The (-)-Epigallocatechin gallat group significantly enhanced catechin's anticancer potential. This property could be utilized in future semi-synthesis of flavonoid derivatives to develop novel anticancer agents.
If you need take (-)-Epigallocatechin gallat, you should pay more attention to it. Learning more health information, properties or suppliers about (-)-Epigallocatechin gallat, you can access Guidechem.
It is the most abundant catechin in tea and is a potent antioxidant that may have therapeutic applications in the treatment of many disorders (e.g. cancer). It is found mainly in green tea and, in smaller quantities, black tea; during black tea production, the catechins are mostly converted to theaflavins and thearubigins, and theabrownins.
(-)-Epigallocatechin gallate (CAS NO:989-51-5) has been used for a tumor-inhibiting constituent of green tea for altering the cleavage of amyloid precursor protein, decreasing production of amaloid- and amaloid plaques in mice.
It has been the subject of a number of studies investigating its potential use as a therapeutic for a broad range of disorders: HIV, Cancer, Chronic fatigue syndrome, Sjögren's syndrome, Endometriosis, Spinal muscular atrophy, Neurodegeneration, Periapical lesions, Cannabinoid 1 receptor, CB1 receptor Activity.
(-)-Epigallocatechin gallat studies have shown that intake of tea catechins is associated with a lower risk of cardiovascular disease. The antioxidative activity of tea-derived catechins has been extensively studied. Reports have shown that green tea extract intake is associated with increased weight loss due to diet-induced thermogenesis, which is generally attributed to the catechin (-)-Epigallocatechin gallat.
Green tea is a popular drink consumed daily by millions of people around the world. Previous studies have shown that some polyphenol compounds from green tea possess anticancer activities. However, systemic evaluation was limited. We determined the cancer chemopreventive potentials of 10 representative polyphenols and explored their structure-activity relationship.
The effect of the 10 polyphenol compounds on the proliferation of HCT-116 and SW-480 human colorectal cancer cells was evaluated using an MTS assay. Cell cycle distribution and apoptotic effects were analyzed by flow cytometry after staining with propidium iodide (PI)/RNase or annexin V/PI. Among the 10 polyphenols, EGCG showed the most potent antiproliferative effects, and significantly induced cell cycle arrest in the G1 phase and cell apoptosis.
When the relationship between chemical structure and anticancer activity was examined, C and EC did not show antiproliferative effects, and GA showed some antiproliferative effects. When C and EC esterified with GA to produce CG and ECG, the antiproliferative effects were increased significantly.
A similar relationship was found between EGC and (-)-Epigallocatechin gallat. The (-)-Epigallocatechin gallat group significantly enhanced catechin's anticancer potential. This property could be utilized in future semi-synthesis of flavonoid derivatives to develop novel anticancer agents.
If you need take (-)-Epigallocatechin gallat, you should pay more attention to it. Learning more health information, properties or suppliers about (-)-Epigallocatechin gallat, you can access Guidechem.
2014年1月19日星期日
What is Spironolactone mainly used for ?
Spironolactone is a synthetic, a white powder, commonly referred to simply as "spiro", and marketed primarily under the brand name Aldactone in most countries. The Molecular Formula is C24H32O4S, Molecular Weight is 416.57.
Spironolactone is stable under normal temperatures and pressures. Keep container closed when not in use. Store it in a cool, dry, well-ventilated area away from incompatible substances. Competitive mineralocorticoid (aldosterone) receptor antagonist that exhibits antihypertensive activity in vivo . Also displays antiandrogen activity and inhibits steroid hormone biosynthesis. The CAS Registry Number is 52-01-7.
Spironolactone is a synthetic 17-lactone steroid which is a renal competitive aldosterone antagonist in a class of pharmaceuticals called potassium-sparing diuretics, used primarily to treat ascites in patients with liver disease, low-renin hypertension, hypok.
As an important medicine, Spironolactone(CAS NO: 52-01-7) has been used to treat high blood pressure. Lowering high blood pressure helps prevent strokes, heart attacks, and kidney problems. It is also used to treat swelling (edema) caused by certain conditions (congestive heart failure) by removing excess fluid and improving symptoms such as breathing problems.
Spironolactone is a potent antagonist of the androgen receptor as well as an inhibitor of androgen production. Due to the antiandrogenic effects that result from these actions, it is frequently used to treat a variety of cosmetic conditions in which androgen hormones such as testosterone and dihydrotestosterone (DHT) play a role, including hirsutism, androgenic alopecia, acne, and seborrhea in females, and male pattern baldness in either low doses or as a topical formulation in males; higher doses are not recommended for males due to the high risk of feminization and other side effects. In addition, it is also commonly used to treat symptoms of hyperandrogenism in polycystic ovary syndrome.
It is also used to treat low potassium levels and conditions in which the body is making too much of a natural chemical (aldosterone). Spironolactone is known as a "water pill" (potassium-sparing diuretic).
Spironolactone is used to diagnose or treat a condition in which you have too much aldosterone in your body. Aldosterone is a hormone produced by your adrenal glands to help regulate the salt and water balance in your body.
Spironolactone also treats fluid retention (edema) in people with congestive heart failure, cirrhosis of the liver, or a kidney disorder called nephrotic syndrome. It is also used to treat or prevent hypokalemia (low potassium levels in the blood).
If you need take Spironolactone, you should pay more attention to it. Learning more health information, properties or suppliers about Spironolactone, you can access Guidechem. Guidechem chemical B2B network provides information on china and global chemical market quotation and relative chemical Information.
Spironolactone is stable under normal temperatures and pressures. Keep container closed when not in use. Store it in a cool, dry, well-ventilated area away from incompatible substances. Competitive mineralocorticoid (aldosterone) receptor antagonist that exhibits antihypertensive activity in vivo . Also displays antiandrogen activity and inhibits steroid hormone biosynthesis. The CAS Registry Number is 52-01-7.
Spironolactone is a synthetic 17-lactone steroid which is a renal competitive aldosterone antagonist in a class of pharmaceuticals called potassium-sparing diuretics, used primarily to treat ascites in patients with liver disease, low-renin hypertension, hypok.
As an important medicine, Spironolactone(CAS NO: 52-01-7) has been used to treat high blood pressure. Lowering high blood pressure helps prevent strokes, heart attacks, and kidney problems. It is also used to treat swelling (edema) caused by certain conditions (congestive heart failure) by removing excess fluid and improving symptoms such as breathing problems.
Spironolactone is a potent antagonist of the androgen receptor as well as an inhibitor of androgen production. Due to the antiandrogenic effects that result from these actions, it is frequently used to treat a variety of cosmetic conditions in which androgen hormones such as testosterone and dihydrotestosterone (DHT) play a role, including hirsutism, androgenic alopecia, acne, and seborrhea in females, and male pattern baldness in either low doses or as a topical formulation in males; higher doses are not recommended for males due to the high risk of feminization and other side effects. In addition, it is also commonly used to treat symptoms of hyperandrogenism in polycystic ovary syndrome.
It is also used to treat low potassium levels and conditions in which the body is making too much of a natural chemical (aldosterone). Spironolactone is known as a "water pill" (potassium-sparing diuretic).
Spironolactone is used to diagnose or treat a condition in which you have too much aldosterone in your body. Aldosterone is a hormone produced by your adrenal glands to help regulate the salt and water balance in your body.
Spironolactone also treats fluid retention (edema) in people with congestive heart failure, cirrhosis of the liver, or a kidney disorder called nephrotic syndrome. It is also used to treat or prevent hypokalemia (low potassium levels in the blood).
If you need take Spironolactone, you should pay more attention to it. Learning more health information, properties or suppliers about Spironolactone, you can access Guidechem. Guidechem chemical B2B network provides information on china and global chemical market quotation and relative chemical Information.
2014年1月16日星期四
Help you understand what Potassium sorbate is ?
Potassium sorbate is a kind of white crystals or powders, the Molecular Formula is C6H7KO2, Molecular Weight is 150.21. It is stable, incompatible with strong oxidizing agents. The Density: 1,361 g/cm3,Boiling Point:233C at 760 mmHg,Melting Point:270C,Flash Point:139.9C. It has the Synonyms 2,4-Hexadienoic acid and potassium salt. The CAS Registry Number of this compound is 24634-61-5.
Potassium sorbate is salt of sorbic acid and is prepared by reacting sorbic acid with potassium hydroxide. It is a white or yellowish crystalline powder or granule. Potassium sorbate is soluble in water. Once dissolved in water, it produces sorbic acid. It is effective as a preservative up to a pH of 6.5. Its effectiveness falls off as pH is lowered. It is inexpensive to produce, shelf stable and easy to use as an ingredient in foods and other products requiring antimicrobial activity.
Potassium sorbate(CAS NO:24634-61-5) is used as a preservative ingredient in many food products. It inhibits microbial growth, thereby reducing the risk of disease from and increasing the shelf life of food items. It can be used in a variety of foods including dairy products, baked goods, beverages, cured fish and meats, vegetable and fruit products, and confections.
In most cases, potassium sorbate is considered non-toxic and safe for use in commercial and culinary applications. However, some scientists believe that the addition of synthetic ingredients to foods, especially foods which are consumed quite regularly, can cause long term side effects which can be harmful.
Potassium sorbate is a skin, eye and respiratory irritant. Although some research implies it has a long term safety record, in vitro studies have shown that it is both genotoxic and mutagenic to human blood cells. Potassium sorbate is found to be toxic to human DNA in peripheral blood lymphocytes, and hence found that it negatively affects immunity. It is often used with ascorbic acid and iron salts as they increase its effectiveness but this tends to form mutagenic compounds that damage DNA molecules.
Intravenous feeding of potassium sorbate reduces gastric burden of pathogenic bacteria. It is often used with ascorbic acid and iron salts as they increase its effectiveness but this can form mutagenic compounds that damage DNA molecules.
Potassium sorbate has been generally recognized as safe for use in foods and personal care products. Potassium sorbate has been cleared as a food preservative by the U.S. Food and Drug Administration based on extensive testing. Potassium sorbate is well-tolerated in most people, being easily metabolized. Allergic reactions are rare.
If you need take Potassium sorbate, you should pay more attention to it. Learning more health information, properties or suppliers aboutPotassium sorbate, you can access Guidechem.
Potassium sorbate is salt of sorbic acid and is prepared by reacting sorbic acid with potassium hydroxide. It is a white or yellowish crystalline powder or granule. Potassium sorbate is soluble in water. Once dissolved in water, it produces sorbic acid. It is effective as a preservative up to a pH of 6.5. Its effectiveness falls off as pH is lowered. It is inexpensive to produce, shelf stable and easy to use as an ingredient in foods and other products requiring antimicrobial activity.
Potassium sorbate(CAS NO:24634-61-5) is used as a preservative ingredient in many food products. It inhibits microbial growth, thereby reducing the risk of disease from and increasing the shelf life of food items. It can be used in a variety of foods including dairy products, baked goods, beverages, cured fish and meats, vegetable and fruit products, and confections.
In most cases, potassium sorbate is considered non-toxic and safe for use in commercial and culinary applications. However, some scientists believe that the addition of synthetic ingredients to foods, especially foods which are consumed quite regularly, can cause long term side effects which can be harmful.
Potassium sorbate is a skin, eye and respiratory irritant. Although some research implies it has a long term safety record, in vitro studies have shown that it is both genotoxic and mutagenic to human blood cells. Potassium sorbate is found to be toxic to human DNA in peripheral blood lymphocytes, and hence found that it negatively affects immunity. It is often used with ascorbic acid and iron salts as they increase its effectiveness but this tends to form mutagenic compounds that damage DNA molecules.
Intravenous feeding of potassium sorbate reduces gastric burden of pathogenic bacteria. It is often used with ascorbic acid and iron salts as they increase its effectiveness but this can form mutagenic compounds that damage DNA molecules.
Potassium sorbate has been generally recognized as safe for use in foods and personal care products. Potassium sorbate has been cleared as a food preservative by the U.S. Food and Drug Administration based on extensive testing. Potassium sorbate is well-tolerated in most people, being easily metabolized. Allergic reactions are rare.
If you need take Potassium sorbate, you should pay more attention to it. Learning more health information, properties or suppliers aboutPotassium sorbate, you can access Guidechem.
2014年1月15日星期三
What Human Health may 3-Aminopropyltriethoxysilane have?
3-Aminopropyltriethoxysilane is a kind of colourless liquids, it has the Synonyms: AMEO; (3-Aminopropyl)triethoxysilane. The Molecular Formula is C9H23NO3Si, Molecular Weight is 221.37, it is stable, incompatible with acids, strong oxidizing agents. It may decompose on exposure to moisture. The CAS Registry Number is 919-30-2.
3-Aminopropyltriethoxysilane is a coupling agent. Although it is an important industry Industrial raw materials, we should not ingore the effects on Human Health. Here is a research on the Human Health about 3-Aminopropyltriethoxysilane.
3-Aminopropyltriethoxysilane(CAS NO: 919-30-2) has been tested for acute toxicity by the oral, dermal, and inhalation routes of exposure. Acute oral LD50s in rats range from 1570 to 3650 mg/kg bw. The dermal LD50 is 4.29 g/kg bw and the 4-hour inhalation LC50 of the hydrolysate is greater than 7.35 mg/L. Six hours of exposure to substantially saturated vapor of APTES did not kill any of the 5 male or female rats (LT50 > 6 hours). The kidney is a target organ for toxicity for oral and dermal exposures.
It is severely irritating to the skin and eyes. In a Buehler study in guinea pigs, 7/30 animals showed a skin sensitization response. The hydrolysis products of this material do not elicit a sensitization response in a guinea pig maximization test.
Repeated inhalation exposure of rats to 147 mg/m3of 3-Aminopropyltriethoxysilane hydrolysate respirable aerosol for four weeks produced squamous metaplasia and foci of minimal granulomatous laryngitis. No systemic toxicity was observed in rabbits after 9 repeated dermal doses of 17 or 84 mg/kg bw/day or three repeated dermal doses of 126 mg/kg bw/day of this compound; the site of contact NOAEL is less than 17 mg/kg bw/day.
3-Aminopropyltriethoxysilane has been tested in several bacterial reverse mutation/Ames assays, in vitro V79 hamster lung cell and Chinese hamster fibroblast chromosome aberration assays, two Chinese hamster ovary cell HGPRT gene mutation assays, and an in vivo mouse micronucleus assay. In vivo and in vitro screening assays have not revealed any evidence of genotoxic potential.
At the highest dose-level (600 mg/kg/day) in a 90 day oral gavage study in rats, no effects were seen on parameters of oestrus cycle and spermatogenesis or reproductive organs. The NOAEL for developmental effects has been identified for 3-Aminopropyltriethoxysilane following exposure via oral (gavage) in rats, with a value of 100 mg/kg bw/day, the NOAEL for maternal toxicity based on deaths and ulceration of the GI tract is <0.5 mL/kg.
This study has give us the most detail information about the effects on Human Health of 3-Aminopropyltriethoxysilane, we need this chemical, but we should never be hurt by it. If you need to learn more information about 3-Aminopropyltriethoxysilane, you can access the our Guidechem.Guidechem chemical B2B network provides information on china and global chemical market quotation and relative chemical Information.
3-Aminopropyltriethoxysilane is a coupling agent. Although it is an important industry Industrial raw materials, we should not ingore the effects on Human Health. Here is a research on the Human Health about 3-Aminopropyltriethoxysilane.
3-Aminopropyltriethoxysilane(CAS NO: 919-30-2) has been tested for acute toxicity by the oral, dermal, and inhalation routes of exposure. Acute oral LD50s in rats range from 1570 to 3650 mg/kg bw. The dermal LD50 is 4.29 g/kg bw and the 4-hour inhalation LC50 of the hydrolysate is greater than 7.35 mg/L. Six hours of exposure to substantially saturated vapor of APTES did not kill any of the 5 male or female rats (LT50 > 6 hours). The kidney is a target organ for toxicity for oral and dermal exposures.
It is severely irritating to the skin and eyes. In a Buehler study in guinea pigs, 7/30 animals showed a skin sensitization response. The hydrolysis products of this material do not elicit a sensitization response in a guinea pig maximization test.
Repeated inhalation exposure of rats to 147 mg/m3of 3-Aminopropyltriethoxysilane hydrolysate respirable aerosol for four weeks produced squamous metaplasia and foci of minimal granulomatous laryngitis. No systemic toxicity was observed in rabbits after 9 repeated dermal doses of 17 or 84 mg/kg bw/day or three repeated dermal doses of 126 mg/kg bw/day of this compound; the site of contact NOAEL is less than 17 mg/kg bw/day.
3-Aminopropyltriethoxysilane has been tested in several bacterial reverse mutation/Ames assays, in vitro V79 hamster lung cell and Chinese hamster fibroblast chromosome aberration assays, two Chinese hamster ovary cell HGPRT gene mutation assays, and an in vivo mouse micronucleus assay. In vivo and in vitro screening assays have not revealed any evidence of genotoxic potential.
At the highest dose-level (600 mg/kg/day) in a 90 day oral gavage study in rats, no effects were seen on parameters of oestrus cycle and spermatogenesis or reproductive organs. The NOAEL for developmental effects has been identified for 3-Aminopropyltriethoxysilane following exposure via oral (gavage) in rats, with a value of 100 mg/kg bw/day, the NOAEL for maternal toxicity based on deaths and ulceration of the GI tract is <0.5 mL/kg.
This study has give us the most detail information about the effects on Human Health of 3-Aminopropyltriethoxysilane, we need this chemical, but we should never be hurt by it. If you need to learn more information about 3-Aminopropyltriethoxysilane, you can access the our Guidechem.Guidechem chemical B2B network provides information on china and global chemical market quotation and relative chemical Information.
2014年1月14日星期二
What is 17-methyltestosterone?
17-methyltestosterone is a white to off-white crystalline powder, it is stable under normal temperatures and pressures, the Density is 112, Boiling Point is 104-116 C, Melting Point is 162-168 C, and Flash Point is 185.3 C. It has the Molecular Formula:C20H30O2, and Molecular Weight:302.451. The CAS Registry Number is 58-18-4.
17-methyltestosterone is a synthetic anabolic steroid used for treating men with testosterone deficiency or similar androgen replacement therapies. Also, has antineoplastic properties and so has been used secondarily in women with advanced breast cancer. In fish culture, used to produce monosex populations of those species which tend to overpopulate
17-methyltestosterone(CAS NO:58-18-4) is a steroid hormone from the androgen group. It is primarily secreted from the testes of males. In females, it is produced in the ovaries, adrenal glands and by conversion of adrostenedione in the periphery. It is the principal male sex hormone and an anabolic steroid.
In both males and females, it plays key roles in health and well-being. Examples include enhanced libido, energy, immune function, and protection against osteoporosis. On average, the adult male body produces about twenty times the amount of testosterone than an adult female's body does.
The effects of 17-methyltestosterone in humans and other vertebrates occur by way of two main mechanisms: by activation of the androgen receptor (directly or as DHT), and by conversion to estradiol and activation of certain estrogen receptors.
Free 17-methyltestosterone is transported into the cytoplasm of target tissue cells, where it can bind to the androgen receptor, or can be reduced to 5α-dihydrotestosterone (DHT) by the cytoplasmic enzyme 5α-reductase. DHT binds to the same androgen receptor even more strongly than T, so that its androgenic potency is about 2.5 times that of T.
The T-receptor or DHT-receptor complex undergoes a structural change that allows it to move into the cell nucleus and bind directly to specific nucleotide sequences of the chromosomal DNA. The areas of binding are called hormone response elements (HREs), and influence transcriptional activity of certain genes, producing the androgen effects.
The Side effects of 17-methyltestosterone include amnesia, anxiety, discolored hair, dizziness, dry skin, hirsutism, hostility, impaired urination, paresthesia, penis disorder, peripheral edema, sweating, and vasodilation.
Want to learn more information about 17-methyltestosterone, you can access the guidechem.com. You can not only find high quality 17-methyltestosterone, but also learn more information in our guidechem. Guidechem provide the most convenient conditions for the international buyers and let these leads benefit all the business people. Guidechem chemical B2B network provides information on china and global chemical market quotation and relative chemical Information. Guidechem Chemical Network providing the most complete information of the chemical industry.
17-methyltestosterone is a synthetic anabolic steroid used for treating men with testosterone deficiency or similar androgen replacement therapies. Also, has antineoplastic properties and so has been used secondarily in women with advanced breast cancer. In fish culture, used to produce monosex populations of those species which tend to overpopulate
17-methyltestosterone(CAS NO:58-18-4) is a steroid hormone from the androgen group. It is primarily secreted from the testes of males. In females, it is produced in the ovaries, adrenal glands and by conversion of adrostenedione in the periphery. It is the principal male sex hormone and an anabolic steroid.
In both males and females, it plays key roles in health and well-being. Examples include enhanced libido, energy, immune function, and protection against osteoporosis. On average, the adult male body produces about twenty times the amount of testosterone than an adult female's body does.
The effects of 17-methyltestosterone in humans and other vertebrates occur by way of two main mechanisms: by activation of the androgen receptor (directly or as DHT), and by conversion to estradiol and activation of certain estrogen receptors.
Free 17-methyltestosterone is transported into the cytoplasm of target tissue cells, where it can bind to the androgen receptor, or can be reduced to 5α-dihydrotestosterone (DHT) by the cytoplasmic enzyme 5α-reductase. DHT binds to the same androgen receptor even more strongly than T, so that its androgenic potency is about 2.5 times that of T.
The T-receptor or DHT-receptor complex undergoes a structural change that allows it to move into the cell nucleus and bind directly to specific nucleotide sequences of the chromosomal DNA. The areas of binding are called hormone response elements (HREs), and influence transcriptional activity of certain genes, producing the androgen effects.
The Side effects of 17-methyltestosterone include amnesia, anxiety, discolored hair, dizziness, dry skin, hirsutism, hostility, impaired urination, paresthesia, penis disorder, peripheral edema, sweating, and vasodilation.
Want to learn more information about 17-methyltestosterone, you can access the guidechem.com. You can not only find high quality 17-methyltestosterone, but also learn more information in our guidechem. Guidechem provide the most convenient conditions for the international buyers and let these leads benefit all the business people. Guidechem chemical B2B network provides information on china and global chemical market quotation and relative chemical Information. Guidechem Chemical Network providing the most complete information of the chemical industry.
2014年1月13日星期一
What is Glyoxal?
Glyoxal is an organic compound with the formula C2H2O2. This white or off-white crystalline is the smallest dialdehyde (two aldehyde groups). Its tautomer acetylenediol is unstable. The Molecular Weight is 58.04, CAS Registry Number is 107-22-2.
Be careful to the Stability Combustible of Glyoxal. It is incompatible with strong oxidizing agents, strong reducing agent. It may polyermize exothermically, and it is incompatible with air, water, oxygen, peroxides, amides, amines, hydroxy-containing materials, nitric acid, aldehydes. Corrodes many metals.
Glyoxal(CAS NO: 107-22-2) practically does not exists as the well-known volatile dialdehyde, but in commercial 40% aqueous solutions, it is predominantly found in non-volatile hydrated and oligomeric forms. Glyoxal is an inflammatory compound formed when cooking oils and fats are heated to high temperatures. It is supplied typically as a 40% aqueous solution. Like other small aldehydes, glyoxal forms hydrates. Furthermore, the hydrates condense to give a series of oligomers, the structures of which remain uncertain. For most applications, the exact nature of the species in solution is inconsequential.
Glyoxal is used as starting material for the synthesis of crosslinking agents, in the textile finishing industry for instance to make urea Glyoxal formaldehyde resins. The paper industry uses large amounts of Glyoxal, where its cellulose crosslinking properties are appreciated to make paper suitable for offset printing and to improve its wet-strength. Through its methylic or ethylic monoacetals or acetals, it is also a key compound in a wide variety of chemistries and applications.
Coated paper and in the textile finishes use large amounts of glyoxal as a crosslinker for starch-based formulations and as a starting material with ureas for wrinkle-resistant chemical treatments. It is used as a solubilizer and cross-linking agent in polymer chemistry: proteins (leather tanning process),collagen,cellulose derivatives (textiles),hydrocolloids,starch (paper coatings)
It is a valuable building block in organic synthesis, especially in the synthesis of heterocycles such as imidazoles. A convenient form of the reagent for use in the laboratory is its bis-hemiacetal with ethylene glycol, 1,4-dioxane-2,3-diol. This compound is commercially available.
The first commercial Glyoxal source was in Lamotte, France, started in 1960 and currently owned by Clariant. The single largest commercial source is BASF in Ludwigshafen, Germany at ~60,000 tons/annum. Until recently only 2 production sites existed in the Americas, however the 45kMT Charlotte facility is closed. Significant capacity has been added recently in China. Commercial bulk Glyoxal is made and reported as a 40%-strength solution.
Want to learn more information about Glyoxal, you can access the guidechem.com. Guidechem chemical B2B network provides information on china and global chemical market quotation and relative chemical Information. Guidechem Chemical Network providing the most complete information of the chemical industry.
Be careful to the Stability Combustible of Glyoxal. It is incompatible with strong oxidizing agents, strong reducing agent. It may polyermize exothermically, and it is incompatible with air, water, oxygen, peroxides, amides, amines, hydroxy-containing materials, nitric acid, aldehydes. Corrodes many metals.
Glyoxal(CAS NO: 107-22-2) practically does not exists as the well-known volatile dialdehyde, but in commercial 40% aqueous solutions, it is predominantly found in non-volatile hydrated and oligomeric forms. Glyoxal is an inflammatory compound formed when cooking oils and fats are heated to high temperatures. It is supplied typically as a 40% aqueous solution. Like other small aldehydes, glyoxal forms hydrates. Furthermore, the hydrates condense to give a series of oligomers, the structures of which remain uncertain. For most applications, the exact nature of the species in solution is inconsequential.
Glyoxal is used as starting material for the synthesis of crosslinking agents, in the textile finishing industry for instance to make urea Glyoxal formaldehyde resins. The paper industry uses large amounts of Glyoxal, where its cellulose crosslinking properties are appreciated to make paper suitable for offset printing and to improve its wet-strength. Through its methylic or ethylic monoacetals or acetals, it is also a key compound in a wide variety of chemistries and applications.
Coated paper and in the textile finishes use large amounts of glyoxal as a crosslinker for starch-based formulations and as a starting material with ureas for wrinkle-resistant chemical treatments. It is used as a solubilizer and cross-linking agent in polymer chemistry: proteins (leather tanning process),collagen,cellulose derivatives (textiles),hydrocolloids,starch (paper coatings)
It is a valuable building block in organic synthesis, especially in the synthesis of heterocycles such as imidazoles. A convenient form of the reagent for use in the laboratory is its bis-hemiacetal with ethylene glycol, 1,4-dioxane-2,3-diol. This compound is commercially available.
The first commercial Glyoxal source was in Lamotte, France, started in 1960 and currently owned by Clariant. The single largest commercial source is BASF in Ludwigshafen, Germany at ~60,000 tons/annum. Until recently only 2 production sites existed in the Americas, however the 45kMT Charlotte facility is closed. Significant capacity has been added recently in China. Commercial bulk Glyoxal is made and reported as a 40%-strength solution.
Want to learn more information about Glyoxal, you can access the guidechem.com. Guidechem chemical B2B network provides information on china and global chemical market quotation and relative chemical Information. Guidechem Chemical Network providing the most complete information of the chemical industry.
2014年1月12日星期日
Safe and supply information about 2-Chloroisonicotinic acid you may need
Chemical and physical properties
Molecular Formula:C6H4ClNO2
Synonyms:2-chloropyridine-4-carboxylate; 2-chloropyridine-4-carboxylic acid;
Appearance: it is a white crystall powder.
Molecular Weight:157.55
Density: 1.47 g/cm3
Boiling Point: 417.7 C at 760 mmHg
Melting Point:246 C
Flash Point:206.4 C
Chemical Stability:Stable under normal temperatures and pressures.
CAS Registry Number:6313-54-8
MSDS of 2-Chloroisonicotinic acid
1.Hazards identification
Harmful if swallowed.The toxicological properties of this material have not been investigated. Use appropriate procedures to prevent opportunities for direct contact with the skin or eyes and to prevent inhalation. Compound is Non-hazardous,Non-Toxic/Non-Flammable.
2.First aid measures
Skin:Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes.
Inhalation:Remove from the exposure of 2-Chloroisonicotinic acid(CAS NO: 6313-54-8) and move to fresh air immediately.
Ingestion:Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
Eyes:Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids.
3.Fire fighting measures
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. The Extinguishing Media, in case of fire, use water, dry chemical, chemical foam, or alcohol-resistant foam.
4.Handing and storage
Handling:Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Avoid contact with eyes, skin, andclothing. Avoid ingestion and inhalation.
Storage:Store in a well closed container.Incompatible materials, strong oxidants. Incompatibilities with Other Materials,Strong oxidizing agents, strong bases.
Suppliers in Guidechem
1.Shanghai Dell Chemical Co.Ltd
Updatetime:Jan 10 2014
Purity:NLT99% Min. Order:1/Kilogram Supply Ability:100 Year/Metric Ton
DetailDesc:Shanghai Dell Chemical Co.Ltd. is specialized in trading and developing active pharmaceutical ingredients, intermediates, API, and custom synthesis according to client’s requirements.
Tel:86-21-51950635
Address:Nianjiabang Rd, Pudong, Shanghai
2.Capot Chemical Co., Ltd.
Updatetime:Jan 10 2014
Purity:98% Min. Order:1/Kilogram Supply Ability:up to kgs Month/Kilogram
DetailDesc:157.55,C6H4ClNO2
Tel:86-571-85586718
Address:Joinhands Science Park, No.4028,Nanhuan Road
4.Atomax Chemicals Co.,Ltd
2-Chloroisonicotinic acid
Updatetime:Dec 11 2013
Purity:95%+ Min. Order:mg/g/Gram Supply Ability:kg/T Month/Kilogram
Tel:86-755-33239182
Address:Huiji302 Hutingju Sanwei Xixiang SHENZHEN 518126, China
5.Hangzhou Dayangchem Co., Ltd.
2-Chloroisonicotinic acid
Updatetime:Jan 10 2014
DetailDesc:2-Chloroisonicotinic acid
Tel:86-571-88938639
Address:B/2601 Fuli Building, 328# WenEr Rd. Hangzhou City 310012 China
6.Shanghai UCHEM Inc.
2-Chloroisonicotinic acid
Updatetime:Jan 11 2014
DetailDesc:2-Chloropyridine-4-carboxylic acid
Tel:086-021-61555264
Address:4th Floor,Build A,500Jianyun Road,Zhoupu,Pudong,Shanghai
Want to learn more information about 2-Chloroisonicotinic acid or any other chemicals, you can access the guidechem.com. Guidechem chemical B2B network provides information on china and global chemical market quotation and relative chemical Information.
Molecular Formula:C6H4ClNO2
Synonyms:2-chloropyridine-4-carboxylate; 2-chloropyridine-4-carboxylic acid;
Appearance: it is a white crystall powder.
Molecular Weight:157.55
Density: 1.47 g/cm3
Boiling Point: 417.7 C at 760 mmHg
Melting Point:246 C
Flash Point:206.4 C
Chemical Stability:Stable under normal temperatures and pressures.
CAS Registry Number:6313-54-8
MSDS of 2-Chloroisonicotinic acid
1.Hazards identification
Harmful if swallowed.The toxicological properties of this material have not been investigated. Use appropriate procedures to prevent opportunities for direct contact with the skin or eyes and to prevent inhalation. Compound is Non-hazardous,Non-Toxic/Non-Flammable.
2.First aid measures
Skin:Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes.
Inhalation:Remove from the exposure of 2-Chloroisonicotinic acid(CAS NO: 6313-54-8) and move to fresh air immediately.
Ingestion:Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
Eyes:Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids.
3.Fire fighting measures
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. The Extinguishing Media, in case of fire, use water, dry chemical, chemical foam, or alcohol-resistant foam.
4.Handing and storage
Handling:Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Avoid contact with eyes, skin, andclothing. Avoid ingestion and inhalation.
Storage:Store in a well closed container.Incompatible materials, strong oxidants. Incompatibilities with Other Materials,Strong oxidizing agents, strong bases.
Suppliers in Guidechem
1.Shanghai Dell Chemical Co.Ltd
Updatetime:Jan 10 2014
Purity:NLT99% Min. Order:1/Kilogram Supply Ability:100 Year/Metric Ton
DetailDesc:Shanghai Dell Chemical Co.Ltd. is specialized in trading and developing active pharmaceutical ingredients, intermediates, API, and custom synthesis according to client’s requirements.
Tel:86-21-51950635
Address:Nianjiabang Rd, Pudong, Shanghai
2.Capot Chemical Co., Ltd.
Updatetime:Jan 10 2014
Purity:98% Min. Order:1/Kilogram Supply Ability:up to kgs Month/Kilogram
DetailDesc:157.55,C6H4ClNO2
Tel:86-571-85586718
Address:Joinhands Science Park, No.4028,Nanhuan Road
4.Atomax Chemicals Co.,Ltd
2-Chloroisonicotinic acid
Updatetime:Dec 11 2013
Purity:95%+ Min. Order:mg/g/Gram Supply Ability:kg/T Month/Kilogram
Tel:86-755-33239182
Address:Huiji302 Hutingju Sanwei Xixiang SHENZHEN 518126, China
5.Hangzhou Dayangchem Co., Ltd.
2-Chloroisonicotinic acid
Updatetime:Jan 10 2014
DetailDesc:2-Chloroisonicotinic acid
Tel:86-571-88938639
Address:B/2601 Fuli Building, 328# WenEr Rd. Hangzhou City 310012 China
6.Shanghai UCHEM Inc.
2-Chloroisonicotinic acid
Updatetime:Jan 11 2014
DetailDesc:2-Chloropyridine-4-carboxylic acid
Tel:086-021-61555264
Address:4th Floor,Build A,500Jianyun Road,Zhoupu,Pudong,Shanghai
Want to learn more information about 2-Chloroisonicotinic acid or any other chemicals, you can access the guidechem.com. Guidechem chemical B2B network provides information on china and global chemical market quotation and relative chemical Information.
2014年1月10日星期五
Guidechem provie high quality 4-Bromotoluene
4-Bromotoluene as a colorless liquid. Insoluble in water, soluble in alcohol, ether. 4-Bromotoluene has the Synonyms of 1-Brom-4-methylbenzol; it is mainly used for organic synthesis of raw materials and intermediates for the pharmaceutical industry. The Molecular Formula is C7H7Br, Molecular Weight is 171.04, and the CAS Registry Number is 106-38-7.
Here is a brief introduction to make 4-Bromotoluene
Production methods: by toluidine diazotization, replacement derived. First add crushed hot sulfuric acid solution of p-toluidine, cooled to 5C, slowly adding sodium nitrite solution to starch iodide test paper turns blue. Then add a small amount of urea destroy excess sodium nitrite. The synthesized cuprous bromide and then adding hydrobromic acid, heated to boiling and then slowly added to the above diazonium salt, subjected to distillation to date no oil. Washed, dried, filtered, atmospheric distillation, collecting 183-185 Cfractions derived products. Cuprous bromide - hydrobromic acid solution can be prepared press law: the copper sulfate, copper scrap, sodium bromide dihydrate, concentrated sulfuric acid and water was heated at reflux for 3-4h, until the solution becomes yellow, is cuprous bromide - hydrobromic acid solution.
You can find high quality 4-Bromotoluene in our Guidechem.
Wuhan Fortuna Chemical Co., Ltd.
4-Bromotoluene(CAS NO:106-38-7 )
Updatetime:Jan 10 2014
Purity:98% Min. Order:25/Kilogram Supply Ability:1000 Month/Kilogram
DetailDesc:4-Bromotoluene 106-38-7 C7H7Br
Tel:0086-27-59207850
Address:A2705,Dong Yi Shi Qu,129# XinHua Road
Shanghai Dell Chemical Co.Ltd
Updatetime:Jan 10 2014
Purity:NLT99% Min. Order:1/Kilogram Supply Ability:100 Year/Metric Ton
DetailDesc:Shanghai Dell Chemical Co.Ltd. is specialized in trading and developing active pharmaceutical ingredients, intermediates, API, and custom synthesis according to client’s requirements.
Tel:86-21-51950635
Address:Nianjiabang Rd, Pudong, Shanghai
Capot Chemical Co., Ltd.
Updatetime:Jan 10 2014
Purity:98% Min. Order:1/Kilogram Supply Ability:up to kgs Month/Kilogram
DetailDesc:171.03,C7H7Br
Tel:86-571-85586718
Address:Joinhands Science Park, No.4028,Nanhuan Road
Hangzhou Dayangchem Co., Ltd.
Updatetime:Jan 10 2014
DetailDesc:4-Bromotoluene
Tel:86-571-88938639
Address:B/2601 Fuli Building, 328# WenEr Rd. Hangzhou City 310012 China
Jinan Haohua Industry Co., Ltd.
Updatetime:Jan 10 2014
Purity:99 Min. Order:1/Kilogram Supply Ability:100 Year/Metric Ton
Tel:0086-531-58773055
Address:No.59 Gongye South RD
Shanghai UCHEM Inc.
4-Bromotoluene
Updatetime:Jan 10 2014
DetailDesc:4-Bromotoluene
Tel:086-021-61555264
Address:4th Floor,Build A,500Jianyun Road,Zhoupu,Pudong,Shanghai
Rosewell Industry Co., Ltd
4-Bromotoluene
Updatetime:Jan 09 2014
DetailDesc:We are the leading supplier of imaging chemicals, pharmaceutical intermediates, and OLED intermediates.
Tel:86-519-86202821
Address:Qixing building, Mingxin road, Changzhou,Jiangsu,China
Angene International Limited
4-Bromotoluene
Updatetime:Jan 08 2014
DetailDesc:You can find p-Bromotoluene with most competitive price and high quality here. Welcome to inquire for stock confirming.
Tel:852-852-81916999
Address:4/F Silvercord Center Tower 1, 30 Canton Rd,KL,Hong Kong
Want to learn more information about 4-Bromotoluene, you can access the guidechem.com. Guidechem provide the most convenient conditions for the international buyers and let these leads benefit all the business people.Guidechem provie high quality 4-Bromotoluene
Trade information about 4-Bromotoluene in Guidechem
4-Bromotoluene, guidechem, 106-38-7
4-Bromotoluene as a colorless liquid. Insoluble in water, soluble in alcohol, ether. 4-Bromotoluene has the Synonyms of 1-Brom-4-methylbenzol; it is mainly used for organic synthesis of raw materials and intermediates for the pharmaceutical industry. The Molecular Formula is C7H7Br, Molecular Weight is 171.04, and the CAS Registry Number is 106-38-7.
Here is a brief introduction to make 4-Bromotoluene
Production methods: by toluidine diazotization, replacement derived. First add crushed hot sulfuric acid solution of p-toluidine, cooled to 5C, slowly adding sodium nitrite solution to starch iodide test paper turns blue. Then add a small amount of urea destroy excess sodium nitrite. The synthesized cuprous bromide and then adding hydrobromic acid, heated to boiling and then slowly added to the above diazonium salt, subjected to distillation to date no oil. Washed, dried, filtered, atmospheric distillation, collecting 183-185 Cfractions derived products. Cuprous bromide - hydrobromic acid solution can be prepared press law: the copper sulfate, copper scrap, sodium bromide dihydrate, concentrated sulfuric acid and water was heated at reflux for 3-4h, until the solution becomes yellow, is cuprous bromide - hydrobromic acid solution.
You can find high quality 4-Bromotoluene in our Guidechem.
Wuhan Fortuna Chemical Co., Ltd.
4-Bromotoluene(CAS NO:106-38-7 )
Updatetime:Jan 10 2014
Purity:98% Min. Order:25/Kilogram Supply Ability:1000 Month/Kilogram
DetailDesc:4-Bromotoluene 106-38-7 C7H7Br
Tel:0086-27-59207850
Address:A2705,Dong Yi Shi Qu,129# XinHua Road
Shanghai Dell Chemical Co.Ltd
Updatetime:Jan 10 2014
Purity:NLT99% Min. Order:1/Kilogram Supply Ability:100 Year/Metric Ton
DetailDesc:Shanghai Dell Chemical Co.Ltd. is specialized in trading and developing active pharmaceutical ingredients, intermediates, API, and custom synthesis according to client’s requirements.
Tel:86-21-51950635
Address:Nianjiabang Rd, Pudong, Shanghai
Capot Chemical Co., Ltd.
Updatetime:Jan 10 2014
Purity:98% Min. Order:1/Kilogram Supply Ability:up to kgs Month/Kilogram
DetailDesc:171.03,C7H7Br
Tel:86-571-85586718
Address:Joinhands Science Park, No.4028,Nanhuan Road
Hangzhou Dayangchem Co., Ltd.
Updatetime:Jan 10 2014
DetailDesc:4-Bromotoluene
Tel:86-571-88938639
Address:B/2601 Fuli Building, 328# WenEr Rd. Hangzhou City 310012 China
Jinan Haohua Industry Co., Ltd.
Updatetime:Jan 10 2014
Purity:99 Min. Order:1/Kilogram Supply Ability:100 Year/Metric Ton
Tel:0086-531-58773055
Address:No.59 Gongye South RD
Shanghai UCHEM Inc.
4-Bromotoluene
Updatetime:Jan 10 2014
DetailDesc:4-Bromotoluene
Tel:086-021-61555264
Address:4th Floor,Build A,500Jianyun Road,Zhoupu,Pudong,Shanghai
Rosewell Industry Co., Ltd
4-Bromotoluene
Updatetime:Jan 09 2014
DetailDesc:We are the leading supplier of imaging chemicals, pharmaceutical intermediates, and OLED intermediates.
Tel:86-519-86202821
Address:Qixing building, Mingxin road, Changzhou,Jiangsu,China
Angene International Limited
4-Bromotoluene
Updatetime:Jan 08 2014
DetailDesc:You can find p-Bromotoluene with most competitive price and high quality here. Welcome to inquire for stock confirming.
Tel:852-852-81916999
Address:4/F Silvercord Center Tower 1, 30 Canton Rd,KL,Hong Kong
Want to learn more information about 4-Bromotoluene, you can access the guidechem.com. Guidechem provide the most convenient conditions for the international buyers and let these leads benefit all the business people.
Here is a brief introduction to make 4-Bromotoluene
Production methods: by toluidine diazotization, replacement derived. First add crushed hot sulfuric acid solution of p-toluidine, cooled to 5C, slowly adding sodium nitrite solution to starch iodide test paper turns blue. Then add a small amount of urea destroy excess sodium nitrite. The synthesized cuprous bromide and then adding hydrobromic acid, heated to boiling and then slowly added to the above diazonium salt, subjected to distillation to date no oil. Washed, dried, filtered, atmospheric distillation, collecting 183-185 Cfractions derived products. Cuprous bromide - hydrobromic acid solution can be prepared press law: the copper sulfate, copper scrap, sodium bromide dihydrate, concentrated sulfuric acid and water was heated at reflux for 3-4h, until the solution becomes yellow, is cuprous bromide - hydrobromic acid solution.
You can find high quality 4-Bromotoluene in our Guidechem.
Wuhan Fortuna Chemical Co., Ltd.
4-Bromotoluene(CAS NO:106-38-7 )
Updatetime:Jan 10 2014
Purity:98% Min. Order:25/Kilogram Supply Ability:1000 Month/Kilogram
DetailDesc:4-Bromotoluene 106-38-7 C7H7Br
Tel:0086-27-59207850
Address:A2705,Dong Yi Shi Qu,129# XinHua Road
Shanghai Dell Chemical Co.Ltd
Updatetime:Jan 10 2014
Purity:NLT99% Min. Order:1/Kilogram Supply Ability:100 Year/Metric Ton
DetailDesc:Shanghai Dell Chemical Co.Ltd. is specialized in trading and developing active pharmaceutical ingredients, intermediates, API, and custom synthesis according to client’s requirements.
Tel:86-21-51950635
Address:Nianjiabang Rd, Pudong, Shanghai
Capot Chemical Co., Ltd.
Updatetime:Jan 10 2014
Purity:98% Min. Order:1/Kilogram Supply Ability:up to kgs Month/Kilogram
DetailDesc:171.03,C7H7Br
Tel:86-571-85586718
Address:Joinhands Science Park, No.4028,Nanhuan Road
Hangzhou Dayangchem Co., Ltd.
Updatetime:Jan 10 2014
DetailDesc:4-Bromotoluene
Tel:86-571-88938639
Address:B/2601 Fuli Building, 328# WenEr Rd. Hangzhou City 310012 China
Jinan Haohua Industry Co., Ltd.
Updatetime:Jan 10 2014
Purity:99 Min. Order:1/Kilogram Supply Ability:100 Year/Metric Ton
Tel:0086-531-58773055
Address:No.59 Gongye South RD
Shanghai UCHEM Inc.
4-Bromotoluene
Updatetime:Jan 10 2014
DetailDesc:4-Bromotoluene
Tel:086-021-61555264
Address:4th Floor,Build A,500Jianyun Road,Zhoupu,Pudong,Shanghai
Rosewell Industry Co., Ltd
4-Bromotoluene
Updatetime:Jan 09 2014
DetailDesc:We are the leading supplier of imaging chemicals, pharmaceutical intermediates, and OLED intermediates.
Tel:86-519-86202821
Address:Qixing building, Mingxin road, Changzhou,Jiangsu,China
Angene International Limited
4-Bromotoluene
Updatetime:Jan 08 2014
DetailDesc:You can find p-Bromotoluene with most competitive price and high quality here. Welcome to inquire for stock confirming.
Tel:852-852-81916999
Address:4/F Silvercord Center Tower 1, 30 Canton Rd,KL,Hong Kong
Want to learn more information about 4-Bromotoluene, you can access the guidechem.com. Guidechem provide the most convenient conditions for the international buyers and let these leads benefit all the business people.Guidechem provie high quality 4-Bromotoluene
Trade information about 4-Bromotoluene in Guidechem
4-Bromotoluene, guidechem, 106-38-7
4-Bromotoluene as a colorless liquid. Insoluble in water, soluble in alcohol, ether. 4-Bromotoluene has the Synonyms of 1-Brom-4-methylbenzol; it is mainly used for organic synthesis of raw materials and intermediates for the pharmaceutical industry. The Molecular Formula is C7H7Br, Molecular Weight is 171.04, and the CAS Registry Number is 106-38-7.
Here is a brief introduction to make 4-Bromotoluene
Production methods: by toluidine diazotization, replacement derived. First add crushed hot sulfuric acid solution of p-toluidine, cooled to 5C, slowly adding sodium nitrite solution to starch iodide test paper turns blue. Then add a small amount of urea destroy excess sodium nitrite. The synthesized cuprous bromide and then adding hydrobromic acid, heated to boiling and then slowly added to the above diazonium salt, subjected to distillation to date no oil. Washed, dried, filtered, atmospheric distillation, collecting 183-185 Cfractions derived products. Cuprous bromide - hydrobromic acid solution can be prepared press law: the copper sulfate, copper scrap, sodium bromide dihydrate, concentrated sulfuric acid and water was heated at reflux for 3-4h, until the solution becomes yellow, is cuprous bromide - hydrobromic acid solution.
You can find high quality 4-Bromotoluene in our Guidechem.
Wuhan Fortuna Chemical Co., Ltd.
4-Bromotoluene(CAS NO:106-38-7 )
Updatetime:Jan 10 2014
Purity:98% Min. Order:25/Kilogram Supply Ability:1000 Month/Kilogram
DetailDesc:4-Bromotoluene 106-38-7 C7H7Br
Tel:0086-27-59207850
Address:A2705,Dong Yi Shi Qu,129# XinHua Road
Shanghai Dell Chemical Co.Ltd
Updatetime:Jan 10 2014
Purity:NLT99% Min. Order:1/Kilogram Supply Ability:100 Year/Metric Ton
DetailDesc:Shanghai Dell Chemical Co.Ltd. is specialized in trading and developing active pharmaceutical ingredients, intermediates, API, and custom synthesis according to client’s requirements.
Tel:86-21-51950635
Address:Nianjiabang Rd, Pudong, Shanghai
Capot Chemical Co., Ltd.
Updatetime:Jan 10 2014
Purity:98% Min. Order:1/Kilogram Supply Ability:up to kgs Month/Kilogram
DetailDesc:171.03,C7H7Br
Tel:86-571-85586718
Address:Joinhands Science Park, No.4028,Nanhuan Road
Hangzhou Dayangchem Co., Ltd.
Updatetime:Jan 10 2014
DetailDesc:4-Bromotoluene
Tel:86-571-88938639
Address:B/2601 Fuli Building, 328# WenEr Rd. Hangzhou City 310012 China
Jinan Haohua Industry Co., Ltd.
Updatetime:Jan 10 2014
Purity:99 Min. Order:1/Kilogram Supply Ability:100 Year/Metric Ton
Tel:0086-531-58773055
Address:No.59 Gongye South RD
Shanghai UCHEM Inc.
4-Bromotoluene
Updatetime:Jan 10 2014
DetailDesc:4-Bromotoluene
Tel:086-021-61555264
Address:4th Floor,Build A,500Jianyun Road,Zhoupu,Pudong,Shanghai
Rosewell Industry Co., Ltd
4-Bromotoluene
Updatetime:Jan 09 2014
DetailDesc:We are the leading supplier of imaging chemicals, pharmaceutical intermediates, and OLED intermediates.
Tel:86-519-86202821
Address:Qixing building, Mingxin road, Changzhou,Jiangsu,China
Angene International Limited
4-Bromotoluene
Updatetime:Jan 08 2014
DetailDesc:You can find p-Bromotoluene with most competitive price and high quality here. Welcome to inquire for stock confirming.
Tel:852-852-81916999
Address:4/F Silvercord Center Tower 1, 30 Canton Rd,KL,Hong Kong
Want to learn more information about 4-Bromotoluene, you can access the guidechem.com. Guidechem provide the most convenient conditions for the international buyers and let these leads benefit all the business people.
2014年1月9日星期四
Summaize something about 3-Bromo-5-fluoropyridine
In this article, I will summaize something about 3-Bromo-5-fluoropyridine for you. Firstly, I will show you the basic chemical and physical properties about it, then introduce you a online hot supply platform Guidechem where you can buy or sell 3-Bromo-5-fluoropyridine or any other chemicals, at last I will show some safe cautions about this chemical. Now let’s start it.
Chemical and physical properties:
Product name: 3-Bromo-5-fluoropyridine
Product Number Brand : 646296
Molecular Formula: C5H3BrFN
Molecular Weight:175.99 g/mol
Synonyms:5-Bromo-3-fluoropyridine
Density:1.707g/cm3
Boiling Point:78 C
Melting Point:24-28C
Flash Point:148C
Appearance:Colorless liquid
CAS Registry Number:407-20-5
Identified uses : Laboratory chemicals, Manufacture of substances
Supply information on Guidechem
1.Capot Chemical Co., Ltd.
Updatetime:Jan 09 2014
Purity:98% Min. Order:1/Kilogram Supply Ability:up to kgs Month/Kilogram
DetailDesc:175.99,C5H3BrFN
Tel:86-571-85586718
Address:Joinhands Science Park, No.4028,Nanhuan Road
2.Hangzhou Dayangchem Co., Ltd.
3-Fluoro-5-bromopyridine(CAS NO:407-20-5 )
Updatetime:Jan 09 2014
DetailDesc:3-Fluoro-5-bromopyridine
Tel:86-571-88938639
Address:B/2601 Fuli Building, 328 WenEr Rd. Hangzhou City 310012 China
3.Hui Chem Company Limited
Updatetime:Jan 09 2014
Purity:98% Min. Order:1/Gram Supply Ability:10 Month/Kilogram
DetailDesc:We could receive custom synthesis according to your requirements from lab scale to commercial scale
Tel:86-21-60542966
Address:Lane 299 Bisheng Rd,Pudong District
4.Shanghai UCHEM Inc.
Updatetime:Jan 09 2014
DetailDesc:3-bromo-5-fluoropyridine
Tel:086-021-61555264
Address:4th Floor,Build A,500Jianyun Road,Zhoupu,Pudong,Shanghai
5.China Huanyu Chemical Industrial Co.,Ltd
Updatetime:Jan 09 2014
DetailDesc:3-bromo-5-fluoropyridine
Tel:86-310-6034055
Address:Maoyi Road,Hanshan District,Handan
Safe information:
1.First aid measures
Eye contact: Check for and remove any contact lenses. IMMEDIATELY flush Eyes with running water for at least 15 minutes while keeping eyes open. COLD water may be used. Seek medical attention.
Skin contact: After contact with skin, wash with plenty of water. Gently and thoroughly wash the contaminated skin with running water and non-abrasive soap. COLD water may be used. Cover the irritated skin with an emollient. Seek medical attention. Wash any contaminated clothing before reusing.
Inhalation: Remove victim from source of exposure to fresh air. If breathing is difficult administer oxygen. Seek medical attention.
Ingestion: Do not induce vomiting. Give water to victim to drink. Seek medical attention.
2.Fire measures
Extinguishing media: carbon dioxide, dry chemical powder, alcohol or polymer foam.
Special fire-fighting procedures: Wear self-contained breathing apparatus and protective
clothing to prevent contact with skin and eyes.
Unusual fire and explosion hazards/decomposition of product: emits toxic fumes under fire
conditions.
3.Handing and storage
Do not breathe 3-Bromo-5-fluoropyridine dust or vapor. Have safety shower and eye wash available. Do not get 3-Bromo-5-fluoropyridine in eyes, on skin, on clothing. Keep container tightly closed. Store 3-Bromo-5-fluoropyridinein a cool, dry, well-ventilated area. Ensure adequate ventilation during use. Use only in a chemical fume hood. Avoid sources of ignition.
Want to learn more supply information about 3-Bromo-5-fluoropyridine or any other chemicals, you can access the guidechem.com. Guidechem provide the most convenient conditions for the international buyers and let these leads benefit all the business people.
Chemical and physical properties:
Product name: 3-Bromo-5-fluoropyridine
Product Number Brand : 646296
Molecular Formula: C5H3BrFN
Molecular Weight:175.99 g/mol
Synonyms:5-Bromo-3-fluoropyridine
Density:1.707g/cm3
Boiling Point:78 C
Melting Point:24-28C
Flash Point:148C
Appearance:Colorless liquid
CAS Registry Number:407-20-5
Identified uses : Laboratory chemicals, Manufacture of substances
Supply information on Guidechem
1.Capot Chemical Co., Ltd.
Updatetime:Jan 09 2014
Purity:98% Min. Order:1/Kilogram Supply Ability:up to kgs Month/Kilogram
DetailDesc:175.99,C5H3BrFN
Tel:86-571-85586718
Address:Joinhands Science Park, No.4028,Nanhuan Road
2.Hangzhou Dayangchem Co., Ltd.
3-Fluoro-5-bromopyridine(CAS NO:407-20-5 )
Updatetime:Jan 09 2014
DetailDesc:3-Fluoro-5-bromopyridine
Tel:86-571-88938639
Address:B/2601 Fuli Building, 328 WenEr Rd. Hangzhou City 310012 China
3.Hui Chem Company Limited
Updatetime:Jan 09 2014
Purity:98% Min. Order:1/Gram Supply Ability:10 Month/Kilogram
DetailDesc:We could receive custom synthesis according to your requirements from lab scale to commercial scale
Tel:86-21-60542966
Address:Lane 299 Bisheng Rd,Pudong District
4.Shanghai UCHEM Inc.
Updatetime:Jan 09 2014
DetailDesc:3-bromo-5-fluoropyridine
Tel:086-021-61555264
Address:4th Floor,Build A,500Jianyun Road,Zhoupu,Pudong,Shanghai
5.China Huanyu Chemical Industrial Co.,Ltd
Updatetime:Jan 09 2014
DetailDesc:3-bromo-5-fluoropyridine
Tel:86-310-6034055
Address:Maoyi Road,Hanshan District,Handan
Safe information:
1.First aid measures
Eye contact: Check for and remove any contact lenses. IMMEDIATELY flush Eyes with running water for at least 15 minutes while keeping eyes open. COLD water may be used. Seek medical attention.
Skin contact: After contact with skin, wash with plenty of water. Gently and thoroughly wash the contaminated skin with running water and non-abrasive soap. COLD water may be used. Cover the irritated skin with an emollient. Seek medical attention. Wash any contaminated clothing before reusing.
Inhalation: Remove victim from source of exposure to fresh air. If breathing is difficult administer oxygen. Seek medical attention.
Ingestion: Do not induce vomiting. Give water to victim to drink. Seek medical attention.
2.Fire measures
Extinguishing media: carbon dioxide, dry chemical powder, alcohol or polymer foam.
Special fire-fighting procedures: Wear self-contained breathing apparatus and protective
clothing to prevent contact with skin and eyes.
Unusual fire and explosion hazards/decomposition of product: emits toxic fumes under fire
conditions.
3.Handing and storage
Do not breathe 3-Bromo-5-fluoropyridine dust or vapor. Have safety shower and eye wash available. Do not get 3-Bromo-5-fluoropyridine in eyes, on skin, on clothing. Keep container tightly closed. Store 3-Bromo-5-fluoropyridinein a cool, dry, well-ventilated area. Ensure adequate ventilation during use. Use only in a chemical fume hood. Avoid sources of ignition.
Want to learn more supply information about 3-Bromo-5-fluoropyridine or any other chemicals, you can access the guidechem.com. Guidechem provide the most convenient conditions for the international buyers and let these leads benefit all the business people.
2014年1月8日星期三
Really good Cetirizine hydrochloride
Cetirizine hydrochloride is an antihistamine. It blocks the activity of histamines or inflammatory chemicals that cause inflammation reactions in the body due to exposure to allergens. Its Molecular Formula is C21H25ClN2O3.2(HCl), Molecular Weight is 461.80968, and CAS Registry Number is 83881-52-1.It is a major metabolite of hydroxyzine, and a racemic selective H1 receptor inverse agonist.
Cetirizine hydrochloride is an antihistamine that treats symptoms, such as itching, runny nose, watery eyes, and sneezing from hay fever (allergic rhinitis) and other allergies, such as allergies to molds and dust mites.
According to McNeil Consumer Healthcare. It is sold in doses for adults and children, and it is also available as a generic drug. According to the FDA, it is sold in 5-milligram and 10-milligram tablets over the counter. It is also available by prescription as a syrup with 5 mg of cetirizine hydrochloride(CAS NO:83881-52-1) per 5 mL of fluid.
Here are some suppliers of Cetirizine hydrochloride, you can find the useful trade information after read this article.
1.Run-biotech Co., Ltd.
Updatetime:Jan 08 2014
DetailDesc:Acetic acid
Tel:86-21-61900721
Address:Room 3-201, No.787, Kangqiao Road, Pudong New District, Shanghai, China
2.Hangzhou Dayangchem Co., Ltd.
Updatetime:Jan 08 2014
DetailDesc:Cetirizine Hydrochloride
Tel:86-571-88938639
Address:B/2601 Fuli Building, 328# WenEr Rd. Hangzhou City 310012 China
3.Wuhan Fortuna Chemical Co., Ltd.
Updatetime:Jan 07 2014
Purity:99% Min. Order:1/Kilogram Supply Ability:1-100 Year/Metric Ton
DetailDesc:CAS: 83881-52-1 M.F.:C21H27Cl3N2O3 M.W.:461.8097
Tel:0086-27-59207850
Address:A2705,Dong Yi Shi Qu,129# XinHua Road
4.AFINE CHEMICALS LIMITED
Updatetime:Jan 07 2014
Min. Order:1/Gram Supply Ability:10 Month/Metric Ton
DetailDesc:cetirizine hcl
Tel:86-571-85232161
Address:6th Floor, Block C, 7th Building, Xigang Xinjie, Xihu Industrial Park, Sandun Town, Hangzhou, China
5.Shanghai Dell Chemical Co.Ltd
Updatetime:Jan 06 2014
Purity:NLT99% Min. Order:1/Kilogram Supply Ability:100 Year/Metric Ton
DetailDesc:Shanghai Dell Chemical Co.Ltd. is specialized in trading and developing active pharmaceutical ingredients, intermediates, API, and custom synthesis according to client’s requirements.
Tel:86-21-51950635
Address:Nianjiabang Rd, Pudong, Shanghai
6.Atomax Chemicals Co.,Ltd
Cetirizine hydrochloride
Updatetime:Dec 11 2013
Purity:95+% Supply Ability:g/kg
DetailDesc:Atomax Chemicals Co.,Ltd a leading global supplier and manufacturer of chiral chemicals, amino acids, aromatic and pyridine halogens, natural extracts and pharmaceutical raw materials. we are a registered chemicals provider for most giant pharmaceutical company like Merck, Pfizer, Novartis, Roche, Astrazeneca, Sanofi-Aventis, etc.
Tel:86-755-33239182
Address:Huiji302 Hutingju Sanwei Xixiang SHENZHEN 518126, China
7.Andexin industrial Co.,Limited
Cetirizine hydrochloride
Updatetime:Jan 08 2014
Min. Order:1/Gram Supply Ability:10 Month/Metric Ton
DetailDesc:cetirizine hcl
Tel:86-411-39074598
Address:No.98,Shengli road,,Jinzhou district
Want to learn more supply information about Cetirizine Hydrochloride or any other chemicals, you can access the guidechem.com. Guidechem chemical B2B network provides information on china and global chemical market quotation and relative chemical Information.Guidechem Chemical Network providing the most complete information of the chemical industry.
Cetirizine hydrochloride is an antihistamine that treats symptoms, such as itching, runny nose, watery eyes, and sneezing from hay fever (allergic rhinitis) and other allergies, such as allergies to molds and dust mites.
According to McNeil Consumer Healthcare. It is sold in doses for adults and children, and it is also available as a generic drug. According to the FDA, it is sold in 5-milligram and 10-milligram tablets over the counter. It is also available by prescription as a syrup with 5 mg of cetirizine hydrochloride(CAS NO:83881-52-1) per 5 mL of fluid.
Here are some suppliers of Cetirizine hydrochloride, you can find the useful trade information after read this article.
1.Run-biotech Co., Ltd.
Updatetime:Jan 08 2014
DetailDesc:Acetic acid
Tel:86-21-61900721
Address:Room 3-201, No.787, Kangqiao Road, Pudong New District, Shanghai, China
2.Hangzhou Dayangchem Co., Ltd.
Updatetime:Jan 08 2014
DetailDesc:Cetirizine Hydrochloride
Tel:86-571-88938639
Address:B/2601 Fuli Building, 328# WenEr Rd. Hangzhou City 310012 China
3.Wuhan Fortuna Chemical Co., Ltd.
Updatetime:Jan 07 2014
Purity:99% Min. Order:1/Kilogram Supply Ability:1-100 Year/Metric Ton
DetailDesc:CAS: 83881-52-1 M.F.:C21H27Cl3N2O3 M.W.:461.8097
Tel:0086-27-59207850
Address:A2705,Dong Yi Shi Qu,129# XinHua Road
4.AFINE CHEMICALS LIMITED
Updatetime:Jan 07 2014
Min. Order:1/Gram Supply Ability:10 Month/Metric Ton
DetailDesc:cetirizine hcl
Tel:86-571-85232161
Address:6th Floor, Block C, 7th Building, Xigang Xinjie, Xihu Industrial Park, Sandun Town, Hangzhou, China
5.Shanghai Dell Chemical Co.Ltd
Updatetime:Jan 06 2014
Purity:NLT99% Min. Order:1/Kilogram Supply Ability:100 Year/Metric Ton
DetailDesc:Shanghai Dell Chemical Co.Ltd. is specialized in trading and developing active pharmaceutical ingredients, intermediates, API, and custom synthesis according to client’s requirements.
Tel:86-21-51950635
Address:Nianjiabang Rd, Pudong, Shanghai
6.Atomax Chemicals Co.,Ltd
Cetirizine hydrochloride
Updatetime:Dec 11 2013
Purity:95+% Supply Ability:g/kg
DetailDesc:Atomax Chemicals Co.,Ltd a leading global supplier and manufacturer of chiral chemicals, amino acids, aromatic and pyridine halogens, natural extracts and pharmaceutical raw materials. we are a registered chemicals provider for most giant pharmaceutical company like Merck, Pfizer, Novartis, Roche, Astrazeneca, Sanofi-Aventis, etc.
Tel:86-755-33239182
Address:Huiji302 Hutingju Sanwei Xixiang SHENZHEN 518126, China
7.Andexin industrial Co.,Limited
Cetirizine hydrochloride
Updatetime:Jan 08 2014
Min. Order:1/Gram Supply Ability:10 Month/Metric Ton
DetailDesc:cetirizine hcl
Tel:86-411-39074598
Address:No.98,Shengli road,,Jinzhou district
Want to learn more supply information about Cetirizine Hydrochloride or any other chemicals, you can access the guidechem.com. Guidechem chemical B2B network provides information on china and global chemical market quotation and relative chemical Information.Guidechem Chemical Network providing the most complete information of the chemical industry.
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