What is 1-(3-Chlorophenyl)-4-(2-phenylethyl)piperazine?

1--4-piperazine is a designer drug of the piperazine class of chemical substances. 3C-PEP is related to meta-cholorophenylpiperazine and phenethylamine that can be thought of as mCPP having a phenylethyl group attached to the nitrogen atom at its 4-position. It was first described in 1994 in a patent disclosing a series of piperazine compounds as sigma receptor ligands. Later, it was discovered to be a highly potent dopamine reuptake inhibitor.