2,4,6(1H,3H,5H)-Pyrimidinetrione, 5-ethyl-5-(4-fluorobutyl)- 309-76-2 4-24-00-01943 (Beilstein Handbook Reference) 5-Ethyl-5-(4-fluorobutyl)barbituric acid BRN 0226908 Barbituric acid, 5-ethyl-5-(4-fluorobutyl)-