2H-Pyrrolo(3,4-d)pyrimidin-2-one, 1,6-dihydro-4,7-diphenyl-5-methyl- 4,7-Diphenyl-5-methyl-1,6-dihydro-2H-pyrrolo(3,4-d)pyrimidin-2-one 57436-09-6 BRN 0621039