4-24-00-02169 (Beilstein Handbook Reference) 5-((2,2-Dimethylpropionyl)methyl)-5-ethylbarbituric acid 69766-59-2 BARBITURIC ACID, 5-((2,2-DIMETHYLPROPIONYL)METHYL)-5-ETHYL- BRN 0248118 Barbituric acid, 5-ethyl-5-pinacolonyl-