Boc-Valacycloir;Bocvalaciclovir;N-t-Boc-valacyclovir;ValacyclovirImpurity13;ValacyclovirImpurity30;ValaciclovirimpurityS(Y0001655);2-[(2-amino-6-oxo-1,6-dihydro-9H-purin-9-yl)methoxy]ethylN-(tert-butoxycarbonyl)-L-valinate;N-tert-Butoxycarbonyl-L-valine-2-[(2Chemicalbook-aMino-1,6-dihydro-6-oxo-9H-purin-9-yl)Methoxy]ethylEster;2-[(2-Amino-6-oxo-1,6-dihydro-9H-purin-9-yl)methoxy]ethylN-[(1,1-dimethylethoxy)carbonyl]-L-valinate;(S)-2-((2-Amino-6-oxo-1H-purin-9(6H)-yl)methoxy)ethyl2-((tert-butoxycarbonyl)amino)-3-methylbutanoate