2-amino-7-((2-hydroxyethoxy)methyl)-1H-purin-6(7H)-one;N7-[(2-Hydroxyethoxy)methyl)guanine; 2-Amino-1,7-dihydro-7-[(2-hydroxyethoxy)methyl]-6H-purin-6-one; Aciclovir Impurity C
2-amino-7-((2-hydroxyethoxy)methyl)-1H-purin-6(7H)-one;N7-[(2-Hydroxyethoxy)methyl)guanine; 2-Amino-1,7-dihydro-7-[(2-hydroxyethoxy)methyl]-6H-purin-6-one; Aciclovir Impurity C