imidazenil imidazenil imidazenil is an experimental anxiolytic drug which is derived from the benzodiazepine family, and is most closely related to other imidazobenzodiazepines such as midazolam, flumazenil, and bretazenil. imidazenilclinical dataatc codenonelegal statuslegal status ca: schedule iv identifiers iupac name 6-(2-bromophenyl)-8-fluoro-4h-imidazobenzodiazepine-3-carboxamide cas number151271-08-8 ypubchem cid119194chemspider106482 yunii7n95v6864rcomptox dashboard (epa)dtxsid90164746 chemical and physical dataformulac18h12brfn4omolar mass399.223 g·mol−13d model (jsmol)interactive image smiles brc4ccccc4c/2=n/cc1c(ncn1c3c\2cc(f)cc3)c(=o)n inchi inchi=1s/c18h12brfn4o/c19-13-4-2-1-3-11(13)16-12-7-10(20)5-6-14(12)24-9-23-17(18(21)25)15(24)8-22-16/h1-7,9h,8h2,(h2,21,25) ykey:ocjhyhkwuwshen-uhfffaoysa-n y (verify) imidazenil is a highly potent benzodiazepine receptor partial agonist with an unusual profile of effects, producing some of the effects associated with normal benzodiazepines such as anticonvulsant and anxiolytic effects, yet without any notable sedative or amnestic effects. in fact, imidazenil blocks the sedative effects of diazepam, yet without lowering the convulsion threshold, and so potentially could be a more flexible antidote than the antagonist flumazenil which is commonly used to treat benzodiazepine overdose at present. imidazenil has not yet been developed commercially for use in humans, however it has been suggested as a safe and effective treatment for anxiety, a potent yet non-sedating anticonvulsant which might be particularly useful in the treatment of poisoning with organophosphate nerve agents, and as a novel treatment for schizophrenia.