butallylonal butallylonal butallylonal is a barbiturate derivative invented in the 1920s. it has sedative properties, and was used primarily as an anaesthetic in veterinary medicine. butallylonal is considered similar in effects to pentobarbital but is longer in action, being considered an intermediate-acting barbiturate rather than short-acting. butallylonalclinical dataatc codenonelegal statuslegal status ca: schedule iv identifiers iupac name 5-sec-butyl-5-(beta-bromoallyl)barbituric acid cas number1142-70-7 ypubchem cid14362chemspider13723 yuniih223why93bchemblchembl469253 yecha infocard100.013.215 chemical and physical dataformulac11h15brn2o3molar mass303.156 g·mol−13d model (jsmol)interactive image smiles o=c1nc(=o)nc(=o)c1(c(c)cc)cc(\br)=c inchi inchi=1s/c11h15brn2o3/c1-4-6(2)11(5-7(3)12)8(15)13-10(17)14-9(11)16/h6h,3-5h2,1-2h3,(h2,13,14,15,16,17) ykey:fwzmbtiuiqujff-uhfffaoysa-n y (verify)