4,6(1H,5H)-Pyrimidinedione,5-ethyldihydro-5-(1-methylpropyl)-2-thioxo, 5-sec-Butyl-5-ethyl-2-thiobarbituric acid, thiobutobarbitone,Inactin, thiobutabarbital, 5-Aethyl-5-sec-butyl-2-thio-barbitursaeure, BARBITURIC ACID,5-sec-BUTYL-5-ETHYL-2-THIO, 5-sec-butyl-5-ethyl-2-thioxo-dihydro-pyrimidine-4,6-dione, 5-ethyl-5-(1-methylpropyl)-2-thiobarbituric acid, 5-ethyl-5-sec-butyl-2-thio-barbituric acid, 4,6(1H,5H)-Pyrimidinedione, 5-ethyldihydro-5-(1-methylpropyl)-2-thioxo-, 5-(sec-Butyl)-5-ethyldihydro-2-thioxopyrimidine-4,6(1H,5H)-dione