135445-74-8 5H-1,2,4-Triazolo(3,4-i)purin-5-one, 6,9-dihydro-9-methyl-6-propyl-3-(4-pyridinyl)- 6,9-Dihydro-9-methyl-6-n-propyl-3-(4-pyridyl)-5H-1,2,4-triazolo(3,4-i)purin-5-one 9-Methyl-6-propyl-3-(4-pyridinyl)-6,9-dihydro-5H-1,2,4-triazolo(3,4-i)purin-5-one