Toxicologie

Applications N-Ethyl-N'-(5-nitro-2-thiazolyl)urea maintains therapeutic activity towards treatment of Salmonella typhimurium and B. fragilis infections due to the nitrothiazole moiety within the substructure.
References Hof, H. et al.: J. Antimicrob. Chemother., 16, 205 (1985);

Impurity Moxifloxacin EP Impurity B
Applications Moxifloxacin (M745000) impurity B.
References Langlois, M., et al.: J. Pharm. Biomed. Anal., 37, 389 (2005), Salem, M., et al.: Chem. Pharm. Bull., 54, 1625 (2006),

Applications 5-Methyl Tetrazole is used in the preparation of novel antifungal agents based derived from N-iodopropargylazoles and N-triiodoallylazoles. 5-Methyl Tetrazole also in the preparation of novel quinoline derivatives against mycobacterium tuberculosis.
References Koyama, M. et al.: J. Med. Chem., 30, 552 (1987); Upadhayaya, R. et al.: Bioorg. Med. Chem., 17, 2830 (2009);

Applications 6-​Fluoro-​3-​[(trimethylsilyl)​oxy]​-2-​pyrazinecarboxamide is an intermediate in synthesizing T-705RTP (T003210), a derivative of T-705 (F103350) which has activity against the lethal H5N1 influenza A viruses. T-705RTP which has the triphosphate group, gets strongly inhibited by the influenza virus RNA polymerase activity in comparison with T-705RMP (T003202).
References Yousuke, F., et al.: Antimicrob Agent Chemother., 49, 981 (2005); Kiso, M., et al.: Proc. Natl. Acad. Sci. U.S.A., 107, 882 (2010);

Applications N'-Boc,N,N'-Desethylene Iso Gatifloxacin Anhydride with Diacetyl Borate is an impurity of Gatifloxacin (G250000), an antibacterial agent.
References Bauernfeind, A.: J. Antimicro. Chemother., 40, 639 (1997), Fukuda, H., et al.: Antimicrob. Ag. Chemother., 42, 1917 (1998),

Applications (2E)-3-(2-Thiazolyl)-2-propenoic Acid is a useful synthetic intermediate. It is used as an intermediate for HIV-1 protease inhibitor.
References Baloglu, E., et al.: PCT Int. Appl. (2014), WO 2014085607 A1 20140605

Applications 2-[(1S,2S)-1-Ethyl-2-(phenylmethoxy)propyl]hydrazine is an impurity of Posaconazole (P689600), which is orally active triazole antifungal.
References Cacciapuoti, A., et al.: Antimicrob. Agents Chemother., 44, 2017 (2000); Herbrecht, R., et al.: Int. J. Clin. Pract., 58, 612 (2004); Panackal, A., et al.: J. Clin. Microbiol., 44, 1740 (2006);

Stability Hygroscopic
Applications N-Methylazetidin-3-amine Dihydrochloride is a useful reagent for synthesis of novel oxazine and thiazine ring-​fused tricyclic quinolonecarboxylic acids, which are good bactericides.
References Okada, T., et al.: J. Heterocycl. Chem., 28, 1067 (1991);

Impurity Lopinavir Impurity
Applications 4,5-Dehydro(pyrimidin-2(1H)-one) Lopinavir is an impurity of Lopinavir (L469480); a selective HIV protease inhibitor and antiviral. It is a COVID19-related research product.
References Sham, H.L., et al.: Antimicrob. Ag. Chemother., 42, 3218 (1998); Kumar, G.N., et al.: Drug Metab. Dispos., 27, 86 (1999); Murphy, R.L., et al.: Antiviral Ther., 4, Suppl. 3, 85 (1999)