(+)-Secobarbital (R)-(+)-Seconal 2,4,6(1H,3H,5H)-Pyrimidinetrione, 5-(1-methylbutyl)-5-(2-propenyl)-, (R)- (9CI) 22328-94-5 BARBITURIC ACID, 5-ALLYL-5-(1-METHYLBUTYL)-, (R)-(+)- R(+)-5-Allyl-5-(1-methylbutyl)-barbituric acid R(+)-Secobarbital