propallylonal propallylonal propallylonal (trade names nostal, quietal, ibomal) is a barbiturate derivative invented in the 1920s. it has sedative, hypnotic and anticonvulsant properties, and is still rarely prescribed as a sleeping medication in some eastern-european countries. propallylonalclinical dataother names5-isopropyl-5-(β-bromoallyl)barbituric acidatc codenonelegal statuslegal status ca: schedule iv identifiers iupac name 5-(2-bromoprop-2-en-1-yl)-5-isopropylpyrimidine-2,4,6(1h,3h,5h)-trione cas number545-93-7 npubchem cid11020chemspider10554 yunii1er3z9guqhcomptox dashboard (epa)dtxsid00202906 echa infocard100.008.088 chemical and physical dataformulac10h13brn2o3molar mass289.129 g·mol−13d model (jsmol)interactive image smiles o=c1nc(=o)nc(=o)c1(c(c)c)cc(\br)=c inchi inchi=1s/c10h13brn2o3/c1-5(2)10(4-6(3)11)7(14)12-9(16)13-8(10)15/h5h,3-4h2,1-2h3,(h2,12,13,14,15,16) ykey:ktgwbbojagdshn-uhfffaoysa-n y ny (what is this?) (verify)