英文别名Acyclovir Impurity K; Acyclovir N-Methylene Dimer; Bis-acyclovir; N2,N2'-Methylenediaciclovir; 9-[(2-Hydroxyethoxy)methyl]-2-{[({9-[(2-hydroxyethoxy)methyl]-6-oxo-6,9-dihydro-3H-purin-2-yl}amino)methyl]amino}-1,9-dihydro-6H-purin-6-one; 2,2'-(Methylenediimino)bis(9-((2-hydroxyethoxy)methyl)-1,9-dihydro-6H-purin-6-one); 2,2'-[Methylenediimino]bis[9-[(2-hydroxyethoxy)methyl]-1,9-dihydro-6H-purin-6-one]; Aciclovir EP Impurity K; Valaciclovir EP Impurity L; Valacyclovir EP Impurity L