1282040-14-5

3'-Azido-3'-deoxy-5-methylcytidine (CS-92) is a potent xenotropic murine leukemia-related retrovirus (XMRV) inhibitor with a CC50 of 43.5 μM in MCF-7 cells. 3'-Azido-3'-deoxy-5-methylcytidine also inhibits HIV-1 reverse transcriptase with an EC50 of 0.06 μM in peripheral blood mononuclear (PBM) cells[1]. 3'-Azido-3'-deoxy-5-methylcytidine is a click chemistry reagent, it contains an Azide group and can undergo copper-catalyzed azide-alkyne cycloaddition reaction (CuAAc) with molecules containing Alkyne groups. It can also undergo strain-promoted alkyne-azide cycloaddition (SPAAC) reactions with molecules containing DBCO or BCN groups.

HIV-1: 0.06 μM (EC₅₀, in PBM cells); XMRV: 43.5 μM (CC₅₀, in MCF-7 cells)

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[1] Singh IR, et al. Raltegravir is a potent inhibitor of XMRV, a virus implicated in prostate cancer and chronic fatigue syndrome. PLoS One. 2010 Apr 1;5(4):e9948. DOI:10.1371/journal.pone.0009948