Quipazine
Quipazine, also known as 1-(2-quinolinyl)piperazine (2-QP), is a serotonergic drug of the arylpiperazine family and an analogue of 1-(2-pyridinyl)piperazine which is used in scientific research. It was first described in the 1960s and was originally intended as an antidepressant but was never developed or marketed for medical use.