1H-Pyrrolo(2,3-d)pyrimidine-2,4(3H,7H)-dione, 5-butyl-1-phenyl-3,6,7-trimethyl- 40678-92-0 5-Butyl-1-phenyl-3,6,7-trimethyl-1H-pyrrolo(2,3-d)pyrimidione-2,4(3H,7H)-dione