Used as a selective antagonist for the 5-HT3 receptor, this compound is primarily applied in scientific research to study serotonin receptor function and its role in gastrointestinal motility and emesis. It helps in investigating the mechanisms of nausea and vomiting, particularly in models related to chemotherapy-induced emesis. Due to its high selectivity, it serves as a pharmacological tool to differentiate 5-HT3 receptor-mediated responses from other serotonin receptor activities. Its application is mostly confined to preclinical studies in neuropharmacology and gastrointestinal physiology.