(R)-9-(3,4-Dihydroxybutyl)guanine 2-Amino-9-((R)-3,4-dihydroxybutyl-9H-purin-6(1H)-on 6H-Purin-6-one, 2-amino-9-(3,4-dihydroxybutyl)-1,9-dihydro-, (R)- 83470-64-8 86304-28-1 BCV BRN 5073058 Buciclovir Buciclovir [INN] Buciclovirum [Latin] Bucyclovir