124832-27-5 136489-37-7 256U87 hydrochloride BW-256U87 DRG-0119 Developm L-Valine, 2-((2-amino-1,6-dihydro-6-oxo-9H-purin-9-yl)methoxy)ethyl ester, monohydrochloride L-Valine, ester with 9-((2-hydroxyethoxy)methyl)guanine, monohydrochloride Valaciclovir Hydrochloride [Pharm Manufacturers Assoc AIDS Medicines in Valaciclovir hydrochloride Valacyclovir hydrochloride Valacyclovir hydrochloride [USAN] Valtrex