Nucleosides and Nucleotides

Impurity Ganciclovir EP Impurity C
Applications 2’-Monodehydroxy-2’-chloro Ganciclovir is an Impurity of Ganciclovir (G235000). 2’-Monodehydroxy-2’-chloro Ganciclovir is a sugar modified acyclic analogue of guanosine (G837900). Studies have shown 2’-Monodehydroxy-2’-chloro Ganciclovir has potential to exhibit virucidal activity. Iso mono chloro ganciclovir
References Martin, J.C., et al.: J. Med. Chem., 29, 1384 (1986);

Impurity Lamivudine EP Impurity J
Applications (2R-cis)-1-[2-(Hydroxymethyl)-1,3-oxathiolan-5-yl]-2,4(1H,3H)-pyrimidinedione (Lamivudine EP Impurity J) is an impurity of Lamivudine (L172500). (2R-cis)-1-[2-(Hydroxymethyl)-1,3-oxathiolan-5-yl]-2,4(1H,3H)-pyrimidinedione is also being further studied to determine its potential as an anti-HIV agent.
References Jeong, L., et al.: J. Med. Chem., 36, 181 (1993)

Applications An irreversible inhibitor of the mammalian DNA repair protein, O6-alkylguanine-DNA alkyltransferase. Assists in the protection against carcinogenic and therapeutic alkylating agents.
References Dolan, M.E., et al.: Proc. Natl. Acad. Sci. USA, 87, 5356 (1990), Goodtzova, K., et al.: Biochemistry, 33, 385 (1994), Elder, R.H., et al.: Biochem. J., 298, 231 (1994)

Applications A labelled 2',3'-cyclic nucleotide phosphodiester
References Voegtli, W., et al.: Biochemistry, 39, 15365 (2000), Bernstein, N., et al.: Mol. Cell, 17, 657 (2005), Blondal, T., et al.: J. Biol. Chem., 280, 5188 (2005), Shenoy, A., et al.: J. Mol. Biol., 365, 211 (2007),

Stability Hygroscopic
Applications A cell-permeable DNA-binding dye. Binds preferentially to DNA rich in adenine and thymine. Used in flow cytometry for measuring nuclear DNA content or for sorting isolated chromosomes.
References Jpeeesen, C, and Nielsen, P.E.: Eur. J. Biochem., 182, 437 (1989), Li,J., et al.: J. Exp. Biol., 200, 1499 (1997), Zaitsev, E.N., and Kowalczykowsi, S.C.: Nucl. Acids Res., 26(2), 650 (1998), Germ, M., et al.: Biochem. Biophys. Res. Commun., 261, 452 (1999),

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 Dopamine labeled biotin (LB) was used as a bifunctional compound to mediate the oxidation of β-nicotinamide adenine dinucleotide (NADH).
References Anderson, L., et al.: Clin. Microbiol., 19, 934 (1984), Bayer, E., et al.: Anal. Biochem., 161, 262 (1987), Harmon, F., et al.: J. Biol. Chem., 255, 9458 (1980),

Impurity Fluorouracil EP Impurity E
Applications Used for the experimental and clinical treatment of neoplastic and viral diseases. Fluorouracil EP Impurity E.
References Yu, H., et al.: J. Biol. Chem., 268, 15935 (1993), Staleva, L., et al.: Mutat. Res., 370, 81(1996), Harris, V., et al.: J. Mol. Biol., 326, 1389 (2003)

Applications 5’-O-Benzoyl Ribavirin is an impurity of Ribavirin (R414475). Ribavirin impurity E.
References Zakharieva., et al.: Bioorganic. Medicinal. Chem., 1994, 4, 2831 (1994), Reichard., et al.: The Lancet, 351, 83 (1998),

Impurity Ganciclovir EP Impurity A
Applications 9-[[2-chloroprop-2-en-1-yl)oxy]methyl]guanine (Ganciclovir EP Impurity A) is an impurity of Ganciclovir (G235000).

Applications Ganciclovir derivative.

Applications Labelled 5-Methyl Uridine. 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 L-Alanine 2-Ethylbutyl Ester Hydrochloride is used in the synthesis of phosphoramidate prodrug of a pyrrolo[2,1-f][triazin-4-amino] adenine C-nucleoside (GS-5734) for the treatment of ebola and emerging viruses.
References Siegel, D., et al.: J. Med. Chem., 60, 1648-1661 (2017)

Applications Labelled Azathioprine (A803350). An immunosuppressive antimetabolite. Also active as disease modifying antirheumatic drug (DMARD).
References Mitrou, P.S., et al.: Arzneim.-Forsch., 29, 483, 662 (1979), Ding, T.L., et al.: Drug. Metab. Dispos., 7, 373 (1979), Chan, G.L.C., et al.: Pharmacotherapy, 7, 165 (1987), Sandborn, W.J., et al.: : Scand. J. Gastroenterol., 33, Suppl. 225, 92 (1998,)