Unscrupulous chemists. It has legit reasons to be manufactured, but it ends up being passed off as MDMA allot.
The antipsychotic I take, Zyprexa (olanzapine) is a Piperazine compound! So I would say it isn't too much "fun" haha. If you are talking about Benzopiperazine, I believe it is a "dirty" drug similar to a bad amphetamine experience. It is a Monoamine-Releasing Agent like amphetamine.
Yeah, a random wave of BZP and TMFPP containing designer drugs recently showed up around here, and then left as fast as they came. Unpleasant was the general consensus. Some people who thought they were gs were marketing it as "TMMMMFFFPPP" annoyingly saying it was like super M and Meth at the same time. My friend called it hours and hours of nausea, delusions and generally unpleasant body sensation... Doesn't sound like a great party compound to me.
Recently had some people turn down pure molly for a pill. It ended up being a pipe, I don't think they had a good night. I saw them at the after party and they seemed very tweeky and unhappy. At least they didn't die.
I took an ecstasy pill that had piperazine(s). I'm guessing it was the BZP/Tmfppp combo that colimon referred to as the combo was supposed to mimic MDMA fairly good. My experience was the first couple of hours were kinda of similar to MDMA, but I think BZP lasts quite a while longer than the Tmfppp and when the Tmfppp wore off it was just an non euphoric, spaced out stimulant buzz for hours. It was difficult to sleep, hard to eat up until the following evening, I took a Ecstasy hiatus after that for a while.
I have had pills with pipe in them and it was for me, a very un-enjoyable experience. Compared to that crazy yet blissful wonder that is MDMA pipes are an utter dissapointment on basically every level. Sadly i hear and read about more and more pills containing this chemical.
nothing is really made synthetically in the natural world either actually, it's all the same, or at least very similar. your body is naturally synthesizing many compounds as we speak.