135445-99-7 5H-1,2,4-Triazolo(3,4-i)purin-5-one, 6,9-dihydro-3,6-diphenyl-9-methyl- 6,9-Dihydro-3,6-diphenyl-9-methyl-5H-1,2,4-triazolo(3,4-i)purin-5-one