APIs for research and impurities

Applications Azapropazone is a non-steroidal anti-inflammatory drug. References Jones, C.: Curr. Med. res. Opin., 4, 3 (1976); In’t Veld, B., et al.;New Eng. J. Med., 345, 1515 (2001)

Rifaximin Impurity H is a research and development product that is available for custom synthesis. It is characterized by its high purity, analytical results, and natural origin. Rifaximin Impurity H has been shown to be a metabolite of the drug rifaximin and may be an impurity standard for HPLC analysis. This custom synthesis can also be used in pharmacopoeia standards and as a research tool for drug development.

Stability Hygroscopic Applications Rebaudioside A is a glycoside from the stevia plant. Rebaudioside A is used as a sweetener with sweetness about 300 times that of sugar with negligible effect on blood glucose. As a result, Rebaudioside A is known for its application in treatment of many diseases like diabetes, high blood pressure and weight loss in some places. References Mishra, P. et al.: Glob. J. Biotechnol. Biochem., 5, 62 (2010); Liu, J. et al.: Ship. Gong. Keji, 30, 359 (2009); Santini, A. et al.: Prog. Nutrit., 10, 5 (2008); Heerranz-Lopez, M. et al.: Agro Food Ind. Hi-Tech, 21, 38 (2010);

Applications Labelled Desloratadine (D290250). Nonsedating-type labelled histamine H1-receptor antagonist. An active labelled metabolite of Loratadine. Also inhibits generation and release of inflammatory mediators from basophils and mast cells. References Kreutner, W., et al.: Arzneimittel-Forsch., 50, 345 (2000), Salmun, L.M., et al.: Clin. Ther., 22, 613 (2000), Agrawal, D.K., et al.: Expert Opin. Invest. Drugs, 10, 547 (2001),

Cyclanes, cyclenes and cycloterpenes, excluding cyclohexane

Ethyl 4-(8-chloro-11H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-ylidene)piperidine-1-carboxylate is a synthetic compound that belongs to the class of piperidines. It is a metabolite of ethyl 4-[(8-chloro-2,3,4,7-tetrahydrobenzo[c]chromen-3-ylidene)amino]piperidine-1carboxylate and has been shown to have an antiinflammatory effect in animal models. Ethyl 4-(8-chloro-11H benzo[5,6]cyclohepta[1,2 b]pyridin 11 ylidene) piperidine 1 carboxylate has been used as an analytical standard for HPLC and as an impurity standard for API.

(5E)-2,2-Dimethyl-7-[methyl(1-naphthalenylmethyl)amino]-5-hepten-3-ynoic acid is a drug product that has been custom synthesized. It is available in high purity (>98%) and with analytical data. This chemical is metabolized through a number of metabolic transformations, including hydrolysis by esterases or glucuronidases, oxidation by cytochrome P450 enzymes, reduction by glutathione reductase, or conjugation with glucuronic acid. (5E)-2,2-Dimethyl-7-[methyl(1-naphthalenylmethyl)amino]-5-hepten-3-ynoic acid has been shown to have pharmacological activity on the central nervous system and may be used as an antidepressant drug candidate.

Cefpodoxime proxetil impurity E is an active compound that belongs to the group of mixtures. It has been shown to have a film-forming property and it may contain sugar.

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