(+)-Pentobarbital 2,4,6(1H,3H,5H)-Pyrimidinetrione, 5-ethyl-5-(1-methylbutyl)-, monosodium salt, (R)- (9CI) 21642-83-1 Barbituric acid, 5-ethyl-5-(1-methylbutyl)-, sodium salt, R(+)- R(+)-5-Ethyl-5-(1-methylbutyl)barbituric acid sodium salt R(+)-Pentobarbital R(+)-Pentobarbital sodium Sodium (R)(+)-pentobarbital