135446-07-0 3,9-Dimethyl-6-(phenylmethyl)-6,9-dihydro-5H-1,2,4-triazolo(3,4-i)purin-5-one 5H-1,2,4-Triazolo(3,4-i)purin-5-one, 6,9-dihydro-3,9-dimethyl-6-(phenylmethyl)- 6,9-Dihydro-6-benzyl-3,9-dimethyl-5H-1,2,4-triazolo(3,4-i)purin-5-one