5,6,7,8-Tetrahydro-1,3-dimethyl-6-(2-propenyl)pyrimido(4,5-d)pyrimidine-2,4(1H,3H)-dione 64179-78-8 BRN 1124565 Pyrimido(4,5-d)pyrimidine-2,4(1H,3H)-dione, 5,6,7,8-tetrahydro-1,3-dimethyl-6-(2-propenyl)-