cyclobarbital cyclobarbital cyclobarbital, also known as cyclobarbitol or cyclobarbitone, is a barbiturate derivative. it was available in russia as a fixed-dose combination with diazepam (100 mg cyclobarbital + 10 mg diazepam; brand name reladorm) for the treatment of insomnia but was discontinued in 2019. cyclobarbitalclinical dataahfs/drugs.cominternational drug namesroutes ofadministrationoral (tablets)atc coden05ca10 (who) legal statuslegal status ca: schedule iv de: anlage ii (authorized trade only, not prescriptible) uk: class b un: psychotropic schedule iii pharmacokinetic datametabolismhepaticexcretionrenalidentifiers iupac name 5-(1-cyclohexenyl)-5-ethyl-1,3-diazinane-2,4,6-trione cas number52-31-3 ycalcium: 143-76-0 ypubchem cid5838chemspider5632 yunii0m8a98ad9hcalcium: 0hzn7fv25r ykeggd07323 nchemblchembl268164 ycomptox dashboard (epa)dtxsid9022865 echa infocard100.000.127 chemical and physical dataformulac12h16n2o3molar mass236.271 g·mol−13d model (jsmol)interactive image smiles o=c1nc(=o)nc(=o)c1(/c2=c/cccc2)cc inchi inchi=1s/c12h16n2o3/c1-2-12(8-6-4-3-5-7-8)9(15)13-11(17)14-10(12)16/h6h,2-5,7h2,1h3,(h2,13,14,15,16,17) ykey:wtygauxicfettc-uhfffaoysa-n y ny (what is this?) (verify)