benzylpiperazine

noun

ben·​zyl·​pi·​per·​a·​zine ˌben-(ˌ)zēl-pī-ˈper-ə-ˌzēn, -zəl- 

: a synthetic derivative C₁₁H₁₆N₂ of piperazine that is used illicitly as a stimulant

Benzylpiperazine, also known as "BZP," is a recreational designer drug that has euphoric, stimulant properties with effects comparable to those produced by amphetamines.

—The Tulsa (Oklahoma) World

called also BZP