Nucleosides and Nucleotides

Applications A labelled metabolite of Capecitabine.
References Arellano, M., ET AL.: Br. J. Cancer, 77, 79 (1998), Budman, D., ET AL.: J. Clin. Oncol., 16, 1795 (1998), Khanna, R., et al.: Cancer Res., 60, 4725 (2000), Charasson, V., et al.: Drug Metab. Dispos., 30, 731 (2002),

Stability Moisture Sensitive
Applications Cytidine 5'-diphosphocholine (cas# 987-78-0) is a useful research chemical.

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)

Stability Hygroscopic
Applications Acyclovir L-Leucinate is an amino acid ester of the antiherpetic agent, Acyclovir (A192400). It is the Leucine analogue of Valacyclovir (V085000).
References Burnette, T. et al.: J. Biol. Chem., 270, 15827 (1995);

Stability Moisture Sensitive
Applications 1-(5-O-Acetyl-β-D-ribofuranosyl)-4-amino-1,3,5-triazin-2(1H)-one is an impurity of 5-Azacytidine (A796000), a potent growth inhibitor and cytotoxic agent. It acts as a demethylating agent by inhibiting DNA methyltransferase.
References Kusaba, H., et al.: Eur. J. Biochem., 262, 924 (1999), Broday, L., et al.: Mol. Cell Biol., 19, 3198 (1999), Qian, X., et al.: Am. J. Pathol., 153, 1475 (1999), Canova, C., et al.: Mech. Ageing Dev., 101, 153 (1998)

Stability Hygroscopic
Applications D-Melphalan is an isomer of melphalan (M216900), which is an antineoplastic.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
References Ross, W.C.J., et al.: Biochem. Pharmacol., 13, 969 (1964); Donelli, M.G., et al.: J. Pharm. Pharmacol., 18, 760 (1966), Furner, R.L., et al.: Cancer Treat. Rep., 64, 559 (1980),

Applications L-Tetrahydrofolic Acid-d4 (Major) is a folic acid derivative and coenzyme involved in the metabolism of amino and nucleic acids.
References Prinz-Langenohl, R., et al.: Brit. J. Pharmacol., 158, 2014 (2009), Martin, H., et al.: Anal. Biochem., 402, 137 (2010), Dasarathy, J., et al.: Am. J. Clin. Nut., 91, 357 (2010), Karas-Kuzelicki, N., et al.: Clin. Biochem., 43, 37 (2010),

Stability Hygroscopic
Applications A reverse transcriptase inhibitor. It is an effective antiviral agent against HIV, HBV, and other viruses replicating in a similar manner. A nucleoside analog structurally related to Lamivudine (L172500).
References Mellors, J., et al.: Science, 72, 1167 (1996), Reimann, K., et al.: J. Virol., 79, 8878 (2005), Rose, J., et al.: J. Biol. Chem., 280, 7413 (2005), Acierno, P., et al.: J. Immunol., 176, 5338 (2006),

Stability Hygroscopic
Applications Used in the characterization and elucidation of coordination requirements of adenine nucleotides complexes with Fe(II) ions.
References Richter, Y., et al.: Nucleos. Nucleot. Nucleic Acids, 22, 1757 (2003),

Applications An intermediate in the preparation of Oxiracetam (O846905).
References Kondepudi, D., et al.: Science, 250 975 (1990), Di Silvestro, G., et al.: J. Pharm. Sci., 82, 758 (1993),

Applications Ethylene Glycol Monobenzoate, is a reagent that can be used as an intermediate in a variety of chemical and biochemical reactions. It is used as an intermediate in the preparation of 1,2-Ethanediol Disodium Salt (E890125), which is the result of the nucleophilic attack on its carbonyl group.
References Khouri, F. et al.: J. Am. Chem. Soc., 108, 6683 (1986);

Applications Des-(3-Oxo-3,4-dihydrogen) 3,6-Difluoro Favipiravir is a building block related to Favipiravir(F103350). Favipiravir is used for the treatment of advanced Ebola virus infection in a small animal model. Favipiravir suppressed the replication of Zaire Ebola virus and prevented a lethal outcome in 100% of the animals. Based on the studies, Favipiravir can be a candidate for the treatment of Ebola hemorrhagic fever.
References Oestereich, L., et al.: Antiviral Res., 105, 17 (2014); Baranovich, T., et al.: J. Virol. 87, 3741 (2013); Chem. and Eng. News p.8, Dec. 1 (2014)

Impurity Capecitabine EP Impurity E
Applications 5'-Deoxy-5-fluoro-N-[(3-methylbutoxy)carbonyl]cytidine (Capecitabine EP Impurity E) is a 5'-Desoxycytidine derivative and is used as an antitumor agent.

Applications 5-O-Trityl-2,3’-anhydrothymidine (cas# 25442-42-6) is a compound useful in organic synthesis.

Impurity Valaciclovir EP Impurity P
Stability Light Sensitive, Temperature Sensitive
Applications Bis Valacyclovir (~90%) (Valaciclovir EP Impurity P) is an impurity is listed in Ph. Eur. monograph for Valaciclovir HCl as impurity P and Bis-valaciclovir in USP monograph (impurity K).

Applications Labelled Uridine, a nucleoside; widely distributed in nature. Uridine is one of the four basic components of ribonucleic acid (RNA)
References Lorine, P., et al.: J. Biol. Chem., 178, 439 (1949); Grakoui, A., et al.: J. Virol., 63, 5216 (1989); Strauss, J., et al.: Microbiol. Rev., 58, 491 (1994); Lin, Y., et al.: Virology, 292, 78 (2002);