(((1R)-2-(6-Amino-9H-purin-9-yl)-1-methylethoxy)methyl)phosphonic acid (R)-9-(2-Phosphonomethoxypropyl)adenine (R)-9-(Phosphonomethoxypropyl)adenine 147127-20-6 GS 1275 PMPA Phosphonic acid, (((1R)-2-(6-amino-9H-purin-9-yl)-1-methylethoxy)methyl)- Phosphonic acid, ((2-(6-amino-9H-purin-9-yl)-1-methylethoxy)methyl)-, (R)- Tenofovir Tenofovir [USAN:INN] Viread (prodrug for Tenofovir)