Synonyms: Propanoic acid, 2,2-dimethyl-, [[[[2-(6-amino-9H-purin-9-yl)ethoxy]methyl]hydroxyphosphinyl]oxy]methyl ester, ((((2-(6-Amino-9H-purin-9-yl)ethoxy)methyl)(hydroxy)phosphoryl)oxy)methyl pivalate, Adefovir monopivoxil, Mono(POM)-PMEA, Mono-POM PMEA, Adefovir related, Adefovir Dipivoxyl Impurity A