Used in research settings as a selective antagonist for serotonin receptors, particularly the 5-HT3 receptor subtype. This compound helps in studying the role of serotonin signaling in neurological pathways, gastrointestinal function, and emesis (nausea and vomiting) mechanisms. Due to its ability to block 5-HT3 receptors, it has been utilized in preclinical studies to evaluate potential antiemetic therapies, especially in contexts involving chemotherapy-induced nausea. Its hydrochloride salt form improves solubility and stability, making it suitable for in vitro and in vivo experimental models. Not intended for human therapeutic use.