2-Amino-1,9-dihydro-9-[(2-hydroxyethoxy)methyl]-6H-purin-6-one 59277-89-3 9-[(2-Hydroxyethoxy)-methyl]guanine ACG ACV AIDS-007944 AIDS007944 Aciclovir Acycloguanosine Acyclovir NSC645011 Vipral Virorax Zovirax