According to wikipedia:
"Piperazines, especially BZP and TFMPP have become an extremely popular substitute in the club and rave scene for MDMA (due to their similarity in effect to amphetamines like MDMA)."
Am I missing something?
Link: http://en.wikipedia.org/wiki/Piperazine
"Piperazines, especially BZP and TFMPP have become an extremely popular substitute in the club and rave scene for MDMA (due to their similarity in effect to amphetamines like MDMA)."
Am I missing something?

Link: http://en.wikipedia.org/wiki/Piperazine

