英文别名Valacyclovir EP Impurity P; Valacyclovir hydrochloride Impurity P; Valaciclovir EP Impurity P; 2,2′-[Methylenebis[imino(6-oxo-1,6-dihydro-9H-purine-9,2-diyl)methylene oxy]] diethyl di(L-valinate); Acyclovir Impurity 7; Valaciclovir EP Impurity P (Valaciclovir Dimer); 2-[[2-[[[9-[2-[(2S)-2-amino-3-methylbutanoyl]oxyethoxymethyl]-6-oxo-3H-purin-2-yl]amino]methylamino]-6-oxo-3H-purin-9-yl]methoxy]ethyl (2S)-2-amino-3-methylbutanoate 
