Flubromazepam is a benzodiazepine derivative which was first synthesized in 1960,^[1] 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.^{[2][3][4][5][6][7][8]}

It is a structural analog of phenazepam in which the chlorine atom has been replaced by a fluorine atom.

An alternate isomer, 5-(2-bromophenyl)-7-fluoro-1,3-dihydro-2H-1,4-benzodiazepin-2-one or “iso-flubromazepam”,^[9] may have been sold under the same name.^[

If accidentally swallowed, consult a doctor immediately. For research purposes only!