1,3,5,6-Tetramethyl-1H-pyrrolo(2,3-d)pyrimidine-2,4(3H,7H)-dione 1H-Pyrrolo(2,3-d)pyrimidine-2,4(3H,7H)-dione, 1,3,5,6-tetramethyl- 36896-67-0 BRN 0747759