1953-33-9 2,4,6(1H,3H,5H)-Pyrimidinetrione, 5-butyl- 324056-09-9 5-Butyl-1H,3H,5H-pyrimidine-2,4,6-trione 5-Butylbarbituric acid Barbituric acid, 5-butyl- Barbituric acid, 5-butyl- (8CI) EINECS 217-781-0 NSC 120724 NSC 32314