135446-06-9 5H-1,2,4-Triazolo(3,4-i)purin-5-one, 6,7-dihydro-9-methyl-6-propyl- 6,7-Dihydro-6-n-propyl-9-methyl-5H-1,2,4-triazolo(3,4-i)purin-5-one 9-Methyl-6-propyl-6,9-dihydro-5H-1,2,4-triazolo(3,4-i)purin-5-one