5-Butyl-5-(cycloocten-1-yl)-barbituric acid 5-Butyl-5-cycloheptenylbarbituric acid 5-Butyl-5-cyclooctenylbarbitursaeure [German] 81773-35-5 B 103 BARBITURIC ACID, 5-BUTYL-5-(CYCLOOCTEN-1-YL)- delta-1-Cyclooctenyl-butyl-barbitursaeure [German]