6-Chloro-2-(1-piperazinyl)quinoxaline

6-Chloro-2-(1-piperazinyl)quinoxaline (CPQ), also known as 4-aza-7-chloroquipazine, is a selective serotonin reuptake inhibitor (SSRI) of the arylpiperazine family related to quipazine. It is highly potent and shows high selectivity for inhibiting the reuptake of serotonin over the reuptake of norepinephrine and dopamine.