Dibenzylpiperazine

Dibenzylpiperazine (also known as DBZP) is a piperazine derivative often found as an impurity in the recreational stimulant drug benzylpiperazine (BZP).

Presence of DBZP is a marker for low quality or badly made BZP. It can be made as a reaction byproduct during BZP synthesis, either because the reaction has been run at too high a temperature, or because an excess of benzyl chloride has been used.

The toxicity of DBZP is unknown. It is not believed to have any stimulant effects in its own right, although this has not been tested.