1,9-dimethyl-1,9-dihydro-6H-purin-6-one 6H-purin-6-one, 1,9-dihydro-1,9-dimethyl- InChI=1/C7H8N4O/c1-10-3-8-5-6(10)9-4-11(2)7(5)12/h3-4H,1-2H