A fluorinated derivative of 2'-deoxycytidine; cytotoxic to CCRF-HSB-2, COLO 320DM, and MKN28 cancer cells (IC50s = 0.15, 0.19, and 29 UG/ml, respectively); inhibits HIV-1 replication in HIV-1-infected C8166 cells (IC50 = 0.7 µM); inhibits HSV-1 and HSV-2 replication in HSV-1- or HSV-2-infected Vero cells (IC50s = 0.12 and 0.3 µM, respectively)