propylbarbital propylbarbital propylbarbital (propal, propanal, proponal), also known as 5,5-dipropylbarbituric acid, is a barbiturate derivative used as a hypnotic drug. propylbarbitalclinical dataatc codenoneidentifiers iupac name 5,5-dipropyl-2,4,6(1h,3h,5h)-pyrimidinetrione cas number2217-08-5pubchem cid75192chemspider67738unii9dcp1473wycomptox dashboard (epa)dtxsid10176700 echa infocard100.017.007 chemical and physical dataformulac10h16n2o3molar mass212.249 g·mol−13d model (jsmol)interactive image smiles o=c1nc(=o)nc(=o)c1(ccc)ccc inchi inchi=1s/c10h16n2o3/c1-3-5-10(6-4-2)7(13)11-9(15)12-8(10)14/h3-6h2,1-2h3,(h2,11,12,13,14,15)key:rcouwkszrxjxla-uhfffaoysa-n