4,7-Diphenyl-1-ethyl-5-methyl-6H-pyrrolo(3,4-d)pyrimidin-2(1H)-one 57436-12-1 6H-Pyrrolo(3,4-d)pyrimidin-2(1H)-one, 4,7-diphenyl-1-ethyl-5-methyl- BRN 0626713