Nucleosides and Nucleotides

Applications A primary degradation product of tRNA, an urinary nucleoside as biological marker for patients with colorectal cancer.
References Borek, E., et al.: Cancer Res., 37, 3362 (1977), Sander, G., et al.: Clin. Sci.,71, 367 (1986), Sander, G., et al.: Ann. Nutr. Metab., 30, 137 (1986), Rasmuson, T., et al.: Acta Oncol., 34, 61 (1995),

Applications Adenosine 5'-Monophosphate is a natural occurring nucleotide and a useful ligand determinant that facilitate the binding of APS reductase inhibitors and activates adenosine receptor agonists.
References Hong, J.A. et al.: J. Med. Chem., 52, 5485 (2009); Korboukh I. et al.: J. Med. Chem., 55, 6467 (2012)

Applications A Cytidine (C998300) analog and also an isostere of Thymidine (T412000).
References Sabini, E., et al.: J. Med. Chem., 51, 4219 (2008), Sabini, E., et al.: J. Mol. Biol., 378, 607 (2008),

Impurity Zidovudine Impurity;
Stability Hygroscopic, Moisture Sensitive
Applications A metabolite of Zidovudine (3'-Azido-3'-deoxythymidine; AZT).
References Qian, M., et al.: Biochem. Pharmacol., 48, 383 (1994), Diwan, B., et al.: Toxicol. Appl. Pharmacol., 161, 82 (1999) , Lim, S., et al.: J. Biol. Chem., 276, 23616 (2001), Von Tungeln, L., et al.: Carcinogenesis, 23, 1427 (2002),

Applications Labelled Entecavir. An oral antiviral drug used in the treatment of hepatitis B infection. A guanine analogue that inhhibits all three steps in the viral replication process.
References Innaimo, S.F., et al.: Antimicrob. Agents Chemother., 41, 1444 (1997), Honkoop, P., et al.: Expert Opin. Invest. Drugs, 12, 683 (2003), Chang, T.-T., et al.: N. Engl. J. Med., 354, 1001 (2006),

Applications Lamivudine epimer.
References Chang, C., et al.: J. Biol. Chem., 267, 13938 (1992), Jeong, L., et al.: J. Med. Chem., 36, 181 (1993),

Stability Hygroscopic, Temperature Sensitive
Applications A metabolite of Adenosine (A280400), a multifunctional nucleoside triphosphate used in cells as a coenzyme of intracellular energy transfer. It transports chemical energy within cells for metabolism.
References Knowles, J., et al.: Annu. Rev. Biochem., 49, 877 (1980),

Impurity Sofosbuvir Metabolite GS331007
Applications RO 2433 is the deaminated metabolite of β-D-2'-Deoxy-2'-fluoro-2'-C-methylcytidine, an effective inhibitor of hepatitis C virus (HCV) replication in vitro.
References Asif, G., et. al.: Antimicrob. Agents Ch., 51, 2877 (2007)

Applications 3’,5’-Di-O-benzyl Entecavir is an intermediate in the preparation of the hepatitis B antiviral agent, Entecavir (E558900).
References Li, R. et al.: Zhong. Yao., 6, 292 (2008); Bisacchi, G.S. et al.: Bioorg. Med. Chem. Lett., 7, 127 (1997);

Applications Antiviral nucleoside analog, also an impurity found in emtricitabine (E525000).
References Jeong, L., et al.: J. Med. Chem., 36, 181 (1993),

Applications Dihydroxy Melphatalan is an analogue of Melphalan (M216900), an antineoplastic.
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 A vitamin needed to synthesize DNA, conduct DNA repair and methylate DNA, it also acts as a cofactor in biological reactions involving folate.
References Xu, L., et al.: Mol. Pharm., 7, 1311 (2010), Everette, J., et al.: J. Agric. Food Chem., 58, 8139 (2010), Alshatwi, A., et al.: Food, Chem., Toxicol., 48, 1881 (2010), McKay, D., et al.: Nut. J., 9 (2010),

Applications trans-Abacavir Dihydrochloride is an impurity of Abacavir. Abacavir (A104990) 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 T-705 Ribofuranose is a reagent used for the preparation of pyrazine-ribofuranose derivatives as antiviral agents that are useful in the treatment of viral infections.
References Zhong, B., et al.: Faming Zhuanli Shenqing, 2014:924257 (2014)

Impurity Aciclovir EP Impurity F
Applications N2-Acetyl Acyclovir (Aciclovir EP Impurity F) is an impurity of Acyclovir (A192400).
References Balon, K., et al.: Pharm. Res., 16, 882 (1999),

Applications A labelled metabolite of 5-Fluorouracil (F596000).
References Bocci, G., et al.: Eur. J. Clin. Pharmacol., 58, 593 (2002), Longley, D.B., Nature Rev. Cancer, 3, 330 (2003), Fischel, J., et al.: Anti-Cancer Drugs, 15, 969 (2004)