Piperazine

Piperazines are a group of chemical compounds that are made up of a ring of six atoms with two nitrogen atoms at the opposite side of each ring. They are widely used to treat parasitic infections, but are also used as antidepressants, antihistamines, and antipsychotics. A number of piperazine compounds are also used as recreational drugs.
Piperazine at Wikipedia
Category:Pharmaceuticals