Flubromazepam is a benzodiazepine derivative which was first synthesized in 1960, but was never marketed and did not receive any further attention or study until late 2012 when it appeared on the grey market as a novel designer drug.
It is a structural analogue of phenazepam in which the chlorine atom has been replaced by a fluorine atom.
An alternative isomer, 5-(2-bromophenyl)-7-fluoro-1,3-dihydro-2H-1,4-benzodiazepin-2-one or “iso-flubromazepam”, may have been sold under the same name.
In the UK, flubromazepam has been classified as a Class C drug by the May 2017 amendment to The Misuse of Drugs Act 1971 along with several other designer benzodiazepine drugs.
Flubromazepam, clonazolam, and flubromazolam are Schedule I controlled substances under Virginia State Law.