1H-Pyrrolo(2,3-d)pyrimidine-2,4(3H,7H)-dione, 5-butyl-1,3,6-trimethyl- 5-Butyl-1,3,6-trimethyl-1H-pyrrolo(2,3-d)pyrimidine-2,4(3H,7H)-dione 53681-26-8 BRN 0662303