6H-Purin-6-one, 2-amino-1,9-dihydro-9-[[2-hydroxy-1-(hydroxymethyl)ethoxyl]methyl]-, sodium Cytovene DHPG Sodium GCV Sodium Ganciclovir sodium Guanine, 9-[[2-hydroxy-1-(hydroxymethyl)ethoxy]methyl]-, sodium salt NSC716361 Nordeoxyguanosine