2-Amino-1,9-dihydro-9-[(2-hydroxyethoxy)methyl]-6H-purin-6-one; 2-Amino-9-((2-hydroxyethoxy)methyl)-1,9-dihydro-6H-purin-6-one; 2-Amino-9-((2-hydroxyethoxy)methyl)-1H-purin-6(9H)-one; 2-Amino-9-((2-hydroxyethoxy)methyl)-3,9-dihydro-6H-purin-6-one; 2-Amino-9-[(2-hydroxyethoxy)methyl]-6,9-dihydro-3H-purin-6-one; 6H-Purin-6-one, 2-amino-1,9-dihydro-9-[(2-hydroxyeth oxy)methyl];