Toxicology

Applications Hexamidine-d12 Impurity A Hydrochloride is the labeled analogue of Hexamidine Impurity A Hydrochloride is an impurity of Hexamidine (H294205), an amidine compound use in the treatment of amyloid-related diseases; also use as preservative in cosmetics. Antiseptic.
References Taylor, P., et al.: J. Pharmaceut. Sci., 72, 1477 (1983); Granel, F., et al.: Clin. Infect. Diseases, 23, 839 (1996); Bailly, C., et al.: Biochem. J., 323, 23 (1997); Enyedy, I., et al.: J. Med. Chem., 44, 1349 (2001)

Applications Labelled 1-Cyclopropyl-6-fluoro-1,4-dihydro-7-ethoxy-8-methoxy-4-oxo-3-quinolinecarboxylic Acid is used in the synthesis of new tetracyclic quinolone antibacterials.
References Taguchi, M. et al.: J. Med. Chem., 35, 94 (1992);

Applications Eicosapentaenoyl Ethanolamide-d4 is labelled Eicosapentaenoyl Ethanolamide (E477960) which inhibits dietary-restriction-induced lifespan extension in wild type and TOR pathway mutant nematodes.
References Lucanic, M., et al.: Nature, 473, 226 (2011)

Applications A potential impurity of Estradiol 17-Valerate (E888860).

Applications (2S,4R)-Itraconazole is an enantiomer of Itraconazole (I937500), an orally active antimycotic structurally related to Ketoconazole. Antifungal. It is a COVID19-related research product.
References Espinel-Ingroff, A., et al.: Antimicrob. Agents Chemother., 26, 5 (1984), Heykants, J., et al.: Mycoses, 32, Suppl 1, 67 (1989), Sugar, A.M.,et al.: Curr. Clin. Top. Infect. Dis., 13, 74 (1993),

Applications 4-Chloro-3,5-dimethylphenoxy)acetic Acid is a synthetic auxin, or a class of plant growth regulators.
References Savaldi-Goldstein, S. et al.: Proc. Nat. Acad. Sci. Uni. Am., 105, 15190 (2008); Mahajan, D. et al.: J. App. Chem., 2, 765 (2013);

Applications An impurity of Docetaxel (D494420).
References Zamir, L., et al.: Tetrahedron Lett., 33, 5173 (1992), Gueritte-Voegelein, F., et al.: J. Med. Chem., 34, 992 (1993), Volk, K., et al.: J. Chromatogr., 696, 99 (1997),

Applications (17β)-9-Hydroperoxyestradiol is an intermediate in the synthesis of [1S-(1α,3aβ,4β,7aα)]-4-[2-(2,5-Dihydroxyphenyl)ethyl]octahydro-1-hydroxy-7a-methyl-5H-inden-5-one (D458310), an estradiol impurity.

Impurity USP Ribavirin Related Compound A
Applications Ribavirin Carboxylic acid is an impurity of Ribavirin (R414475). Ribavirin impurity A.
References Lertora, J., et al.: Clin. Pharmacol. Ther., 50, 442 (1991), Connor, E., et al.: Antimicrob. Agents Chemother., 37, 532 (1993), Manns, M., et al.: Lancet, 358, 958 (2001),

Applications 10-O-Benzyl (R)-Apomorphine-d5 is the isotope labelled analog of 10-O-Benzyl (R)-Apomorphine (B230300); a benzyl derivative of (R)-Apomorphine (A727500) which is a dopamine (D1 and D2) receptor agonist, emetic, and antiparkinsonian.
References Neumeyer, J.L., et al.: J. Pharm. Sci., 59, 1850 (1970); Ginos, J.Z., et al.: J. Med. Chem., 18, 1194 (1975); Muhtadi, F.J., et al.: Anal. Profiles Drug Subs., 20, 121 (1991)