Synonyms: 2,4,6(1H,3H,5H)-Pyrimidinetrione,5-(1-methylbutyl)-5-(2-propenyl)-, (R)-; 2,4,6(1H,3H,5H)-Pyrimidinetrione,5-[(1R)-1-methylbutyl]-5-(2-propenyl)- (9CI); Barbituric acid,5-allyl-5-(1-methylbutyl)-, (R)-(+)- (8CI); (+)-Secobarbital;(R)-(+)-Secobarbital; (R)-(+)-Seconal