metomidate metomidate metomidate is a non-barbiturate imidazole that was discovered by janssen pharmaceutica in 1965 and under the names (hypnodil, nokemyl) is sold as a sedative-hypnotic drug used in europe to treat humans and for veterinary purposes. metomidateclinical dataatcvet codeqn05cm94 (who) legal statuslegal status in general: ℞ (prescription only) identifiers iupac name methyl 1-(1-phenylethyl)-1h-imidazole-5-carboxylate cas number5377-20-8 npubchem cid21474chemspider20182 yuniiz18zyl8y51chemblchembl494039 ycomptox dashboard (epa)dtxsid1048411 echa infocard100.023.971 chemical and physical dataformulac13h14n2o2molar mass230.267 g·mol−13d model (jsmol)interactive image smiles o=c(oc)c1cncn1c(c2ccccc2)c inchi inchi=1s/c13h14n2o2/c1-10(11-6-4-3-5-7-11)15-9-14-8-12(15)13(16)17-2/h3-10h,1-2h3 ykey:fhfzekydsvtyll-uhfffaoysa-n y ny (what is this?) (verify) 11c-labelled metomidate (11c-metomidate), may be used with positron emission tomography (pet). for instance, to detect tumors of adrenocortical origin.