Substituted piperazines are a class of chemical compounds based on a piperazine core. Some are used as recreational drugs and some are used in scientific research.
See also: Benzylpiperazine § Chemical derivatives
See also: Phenylpiperazine
Enpiprazole is known to produce oCPP as a metabolite.
Enciprazine was initially anticipated to produce oMeOPP as a metabolite, but this turned out not to be the case.
Trazodone, nefazodone, mepiprazole, and others produce mCPP as a metabolite.
Many azapirones such as buspirone, gepirone, and tandospirone produce 1-PP as a metabolite.