APIs para investigación e impurezas

Chlorthalidone impurity G is a synthetic, high purity, pharmacopoeia grade impurity standard for chlorthalidone. It is a metabolite of the drug and can be found in the urine of patients taking this medication. Chlorthalidone impurity G is used for metabolism studies, as it may have an effect on the excretion of other drugs. Research and Development

Sitagliptin Keto Amide Impurity is a research and development impurity standard that has been shown to be an impurity in the drug product Sitagliptin. It is a synthetic, analytical impurity that has been shown to be present in the drug product at 0.1% of the total weight. This impurity is soluble in water and ethanol, but insoluble in ether, chloroform, benzene, and dichloromethane. The CAS number for this compound is 764667-65-4. Sitagliptin Keto Amide Impurity can be used as an analytical reference material or as a pharmacopoeia reference standard for HPLC analysis of sitagliptin keto amide and its metabolites.

N-Nitroso-N-methyl-4-aminobutyric acid (NMBA) is a solid with a low melting point which has been identified as a potentially carcinogenic component of both tobacco and tobacco smoke. NMBA is also one of a number of nitrosamine impurities which have been found to be present in angiotensin II receptor blocker (ARB) drugs used to treat high blood pressure.

Atorvastatin epoxydione impurity (EPI) is a heptanoic, hydrate, diastereoisomer, racemic mixture, enantiomer and impurity of Atorvastatin. The EPI has been minimized in the formulation process by using a novel synthesis route that employs a chiral pyrrole derivative as an intermediate. This minimization has allowed for the elimination of the tautomer and other impurities present in the original compound.

Ceftazidime impurity G is a heterocycle that has been found to be a potential flavonoid. It has antiviral and protease inhibitory properties, which may be due to its ability to bind to the serine protease. It also has anti-inflammatory properties, which may be due to its inhibition of tyrosine kinase activity. Ceftazidime impurity G can be used as a pharmaceutical preparation for cardiovascular diseases, cancer, hepatitis, and other diseases.

Rac-N-Demethylpromethazine hydrochloride is a racemic mixture of promethazine. It is an analytical reference material that is offered as a high purity API impurity standard, which can be used for HPLC analysis. Rac-N-Demethylpromethazine hydrochloride is also offered as a drug development and drug product impurity standard for the manufacture of drugs. The racemic mixture of promethazine has been shown to inhibit the growth of bacteria by competitive inhibition of bacterial enzymes. Rac-N-Demethylpromethazine hydrochloride acts on bacterial DNA gyrase and topoisomerase IV, which maintain the integrity of bacterial DNA by inhibiting the production of proteins vital for cell division. Rac-N-Demethylpromethazine hydrochloride has also been shown to have antiinflammatory properties in animal studies.

5-Methoxy-2-[(4-chloro-3,5-dimethyl-2-pyridinyl)methyl]sulfinyl]-5-methoxy-1H benzimidazole is a synthetic drug product. It has been used as a positive control in metabolism studies and as an impurity standard. 5-Methoxy 2-[(4-chloro 3,5 dimethyl 2 pyridinyl)methyl]sulfinyl]-5 methoxy 1H benzimidazole is also a metabolite of the active pharmaceutical ingredient (API) which is used to develop drugs. This chemical is synthesized by custom synthesis and can be obtained at high purity levels. The metabolite of this compound is 5 methoxy 2-[(4 chloro 3,5 dimethyl 2 pyridinyl)methyl]sulfonyl]-5 methoxy 1H benzimidazole.