2-Amino-3,9-dihydro-3-hydroxy-9-methyl-6H-purin-6-one 2-Amino-3-hydroxy-1,7-dihydro-8-methyl-6H-purin-6-one 3-Hydroxy-9-methylguanine 30345-28-9 BRN 1117858 EINECS 250-138-2 Guanine, 3-hydroxy-9-methyl-