1153-13-5 5-25-16-00119 (Beilstein Handbook Reference) 5-Ethyl-5-(4-(1-pyrrolidinyl)-2-butynyl)barbituric acid 5-Ethyl-5-(4-pyrrolidino-2-butynyl)barbituric acid BARBITURIC ACID, 5-ETHYL-5-(4-(1-PYRROLIDINYL)-2-BUTYNYL)- BRN 0926794