probarbital probarbital probarbital (trade names ipral, vasalgin) is a barbiturate derivative invented in the 1920s. it has sedative, hypnotic and anticonvulsant properties. probarbitalclinical dataother namesprobarbital, ipral, vasalgin, 5-isopropyl-5-ethylbarbituric acidatc codenonelegal statuslegal status ca: schedule iv identifiers iupac name 5-ethyl-5-isopropylpyrimidine-2,4,6(1h,3h,5h)-trione cas number76-76-6 npubchem cid6455chemspider6213 yuniir87tf75s6ocomptox dashboard (epa)dtxsid30226897 chemical and physical dataformulac9h14n2o3molar mass198.222 g·mol−13d model (jsmol)interactive image smiles o=c1nc(=o)nc(=o)c1(c(c)c)cc inchi inchi=1s/c9h14n2o3/c1-4-9(5(2)3)6(12)10-8(14)11-7(9)13/h5h,4h2,1-3h3,(h2,10,11,12,13,14) ykey:hhlxjtduhfbyau-uhfffaoysa-n y ny (what is this?) (verify)