3-(4-prop-2-en-1-ylpiperazin-1-yl)quinox

This small molecule is a selective antagonist of 5-HT3 receptor-mediated responses, as demonstrated by its inhibition of 2-methyl-5-HT-induced contractions in the guinea pig ileum assay. It is a useful research tool for investigating serotonin signaling in gastrointestinal and neurological studies, applicable in both in vitro and ex vivo experimental models.