2,4,6(1H,3H,5H)-Pyrimidinetrione, 5-(1,3-dimethyl-2-butenyl)-5-ethyl- 3625-18-1 5-(1,3-Dimethyl-2-butenyl)-5-ethylbarbituric acid Barbituric acid, 5-(1,3-dimethyl-2-butenyl)-5-ethyl- MCN-481 McNeil 481 NSC42268 WLN: T6VMVMV FHJ FY1&Y1&1 F2