APIs for research and impurities

Stability Hygroscopic Applications A metabolite of Bufuralol, a β-Adrenergic blocker with peripheral vasodilating activity. References Boobis, A.R., et al.: Biochem. Pharmacol., 34, 65 (1985), Yamazaki, H., et al.: Mol. Pharmacol., 46, 568 (1994), Mast, N., et al.: Biochem., 42, 14284 (2003),

Esomeprazole impurity 12 is a drug product that belongs to the class of organic compounds. It is a metabolite of esomeprazole, an API impurity. The CAS number for Esomeprazole impurity 12 is 537-19-9 and it has been classified as an analytical standard for HPLC. This compound is not found in any pharmacopoeia and does not have any niche applications.

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Applications Labelled Secnidazole (S225000). Analog of Metronidazole. Antiamebic. Antiprotozoal (Trichomonas). References Cosar, C., et al.: Arzneim.-Forsch., 16, 23 (1966), Videau, D., et al.: Br. J. Vener. Dis., 54, 77 (1978), Symonds, J., et al.: J. Antimicrob. Chemother., 5, 484 (1979),

Applications Ponatinib is a tyrosine kinase inhibitors (TKI) and used to treat chronic myeloid leukemia (CML) (1,2,3). Ponatinib is also used in combination with other drugs, such as forskolin, to combat TKI resistance in patient with CML (3), targeted drug in small-cell lung cancer. Potent FAK inhibitor. FGFR/VEGFR/Bcr-Abl inhibitor It is a COVID19-related research product. References (1) Poch, M. M., et al.: Expert Rev Hematol. 9, 923 (2016) (2) Shamroe, C. L. and Comeau, J. M. Ann Pharmacother. 47, 1540 (2013)(3) Oaxaca, D. M., et al.: Tumour Biol. 37, 12643 (2016)

The impurity is a natural product and an API impurity. The impurity is synthesized by the rearrangement of (E/Z)-FK-506 26,28-allylic ester. This impurity has been shown to be present in drug products at concentrations up to 0.0025% w/w. It is found in analytical samples at concentrations up to 0.02% w/w, which may be due to its use as a HPLC standard. The impurity has been studied for metabolism in rats and rabbits and is not metabolized by microsomal enzymes or conjugated with glucuronic acid. The compound has also been shown to have anti-inflammatory properties in mice models and has no cardiotoxic effects on Balb/c mice.

Applications A labelled metabolite of Erlotinib (E625000), an anti cancer agent. References Rusch, V., et al.: Cancer Res., 53, 2379 (1993), Fontanini, G., et al.: Clin. Cancer Res., 4, 241 (1998), Comis, R., et al.: Oncologist, 10, 467 (2005), Ling, J., et al.: Drug Metab. Dispos., 34, 420 (2006),

Imipramine N-oxide hydrate is a drug product that is used in the synthesis of other drugs. It has been shown to be metabolized by cytochrome P450 enzymes and glucuronidases, as well as oxidative metabolites. Imipramine N-oxide hydrate is a metabolite of imipramine.