3′-deoxy Thymidine is a nucleoside analog of thymidine that has antiviral activity. It inhibits HIV replication in infected human peripheral blood mononuclear cells (PBMCs; EC50 = 0.17 µM).3′-deoxy Thymidine (1, 3, 10, or 30 µM) reduces viral plaque formation in CV-1 cells infected with herpes simplex virus 1 (HSV-1).