135445-92-0 3-(3,4-Dimethoxyphenyl)-9-methyl-6-propyl-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-(3,4-dimethoxyphenyl)-9-methyl-6-propyl- 6,9-Dihydro-9-methyl-6-n-propyl-3-(3,4-dimethoxyphenyl)-5H-1,2,4-triazolo(3,4-i)purin-5-one