Bromazolam is a triazolobenzodiazepine which was first synthesised in 1976, but was never marketed. It has subsequently been sold as a designer drug, first being definitively identified by the EMCDDA in Sweden in 2016.
Flualprazolam is a tranquilizer of the triazolobenzodiazepine class, which are benzodiazepines fused with a triazole ring. It was first synthesised in 1976, but was never marketed. It can be seen as the triazolo version of fludiazepam.
Fluclotizolam is a thienotriazolodiazepine derivative which was first synthesised in 1979, but was never marketed. It has subsequently been sold as a designer drug, first being definitively identified in 2017.
Nitrazolam is a triazolobenzodiazepine , which are benzodiazepine derivatives, that has been sold online as a designer drug. It is closely related to clonazolam or flunitrazolam, only differing by the removal of a chlorine or fluorine group respectively at the benzene ring.
Etizolam is a thienodiazepine derivative which is a benzodiazepine analog. The etizolam molecule differs from a benzodiazepine in that the benzene ring has been replaced by a thiophene ring and triazole ring has been fused, making the drug a thienotriazolodiazepine.