R(+)-Secobarbital sodium

(+)-5-Allyl-5-[(R)-1-methylbutyl]-2-sodiooxy-4,6(1H,5H)-pyrimidinedione

2,4,6(1H,3H,5H)-Pyrimidinetrione, 5-(1-methylbutyl)-5-(2-propenyl)-, monosodium salt, (R)- (9CI)