Toxicology

Applications Α labelled metabolite of Tamoxifen (T006000).
References Sun, D., et al.: Breast Cancer Res., 8(4), (2006), Zheng, Y., et al.: Drug Metab. Dispos., 35, 1942 (2007),

Applications 4-Hydroxy-TEMPO Benzoate, Free Radical is a recycling catalyst in a hypochlorite/bromite-nitroxide oxidizing system for conversion of alcohols to aldehydes, ketones, and carboxylic acids. It circumvents the need to use a catalytic or stoichiometric heavy metal oxidant.
References J. Org. Chem. 55, 462, (1990)

Applications Chlorthiophos is an organophosphorus pesticide.
References Lan, M., et al.: Sepu, 36, 938 (2018); Abbas, M. S., et al.: Int. J. Env. Anal. Chem., 97, 1003 (2017)

Applications Digoxin O-Tetra-acetate is an intermediate used in the synthesis of (3β,5β,12β)-3-[2-[[6-[(2,5-Dioxo-1-pyrrolidinyl)oxy]-6-oxohexyl]amino]-2-oxoethoxy]-12,14-dihydroxycard-20(22)-enolide (D486968), which is a digoxin (D446575) cross-linking reagent.

Applications 4-Chloro-3-fluorobenzoic Acid is a very useful precursor. It is a reagent used to synthesize 6-Hydroxy Albaconazole (H761395) which is a metabolite of Albaconazole (A511450), an antifungal agent as neuroprotectant.
References Pujol, I., et al.: J. Antimicrob. Chemother., 39, 163 (1997), Gilgado, F., et al.: J. Clin. Microbiol., 43, 4930 (2005), Raad, I., et al.: Clin. Infect. Dis., 42, 1398 (2006), Nucci, M., et al.: Clin. Microbiol. Rev., 20, 695 (2007),

Applications Metamizole Magnesium Salt is an analgetic, non-opioid drug used in human and veterinary medicinal treatments.
References Jasiecka, A. et al.: Polish J. Vet. Sci., 17, 207 (2014); Rogosch, T. et al.: Bioorg. Med. Chem., 20, 101 (2012);

Impurity Abacavir EP Impurity C; Abacavir USP Related Compound A
Applications Descyclopropyl Abacavir (Abacavir EP Impurity C; Abacavir Related Compound A) is an intermediate of Abacavir (A105000). Abacavir is a carbocyclic 2'-deoxyguanosine nucleoside reverse transcriptase inhibitor and an anti-HIV drug used to treat HIV infection (1). Intracellular enzymes convert Abacavir to its active form, carbovir-triphosphate (CBV-TP), which then selectively inhibits HIV reverse transcriptase by incorporating into viral DNA (2). Abacavir is metabolized in the liver by uridine diphosphate glucuronyltransferase and alcohol dehydrogenase resulting in inactive glucuronide and carboxylate metabolites, respectively.
References (1) Jackson, A., et al.: Antivir Ther. 17, 19 (2012) (2) Yuen, G. J., et al.: Clin Pharmacokinet. 47, 351 (2008)

Applications (S,S)-Dihydro Bupropion β-D-Glucuronide is a glucuronide metabolite of the drug Bupropion (B689625, HCl salt). Bupropion is a selective inhibitor of dopamine uptake.
References Soroko, F., et al.: J. Pharm. Pharmacol., 29, 769 (1977), Tucker, W.E., J. Clin. Psychiatry, 44, 60 (1983), Hsyu, P-H., et al.: J. Clin. Pharmacol., 37, 737 (1997), West, R., et al.: Expert Opin. Pharmacother., 4, 533 (2003),