8-Chloro-6-(2-fluorophenyl)-3a,4-dihydro-1-methyl-3H-imidazo(1,5-a)(1,4)benzodiazepine

It acts as the direct precursor that undergoes an oxidation step to form the final, fully aromatic imidazobenzodiazepine structure of Midazolam. 8-Chloro-6-(2-fluorophenyl)-3a,4-dihydro-1-methyl-3H-imidazo[1,5-a][1,4]benzodiazepine is a key penultimate intermediate in the synthesis of Midazolam (8-chloro-6-(2-fluorophenyl)-1-methyl-4H-imidazo[1,5-a][1,4]benzodiazepine).