2-[(2-Amino-6-oxo-1,6-dihydro-9H-purin-9-yl)methoxy]ethyl N-(benzyloxy carbonyl)-L-valinate; (S)-2-((2-Amino-6-oxo-1H-purin-9(6H)-yl)methoxy)ethyl 2-(((benzyloxy)carbonyl)amino)-3-methylbutanoate;N-[(Phenylmethoxy)carbonyl]-L-valine 2-[(2-Amino-1,6-dihydro-6-oxo-9H-purin-9-yl)methoxy]ethyl Ester; 2-[(2-Amino-6-oxo-1,6-dihydro-9H-purin-9-yl)methoxy]ethyl N-(benzyloxy carbonyl)-L-valinate; Valacyclovir Related Compound E (USP); N-Benzyloxycarbonyl Valacyclovir