Phenazolam, (Clobromazolam,DM-II-90,BRN 4550445) is abenzodiazepine derivative which acts as a potentsedative andhypnotic drug. It was first invented in the early 1980s,[2] but was never developed for medical use. It has been sold over the internet as adesigner drug, first being identified in seized samples by a laboratory in Sweden in March 2016.[3][4]
^Polívka Z, Holubek J, Metyš J, Šedivŷ Z, Protiva M (1983). "Potential hypnotics and anxiolytics: 8-Chloro-6-(2-chlorophenyl)-1-[4-(2-methoxyethyl) piperazino]-methyl-4H-s-triazolo[4,3-a]-1,4-benzodiazepine and related compounds".Collection of Czechoslovak Chemical Communications.48 (12):3433–43.doi:10.1135/cccc19833433.