Tropisetron is a selective serotonin 5-HT3 receptor antagonist used in the treatment of nausea and vomiting. Impurities in Tropisetron can affect its safety and efficacy. These impurities can be formed during the synthesis process, degradation, or storage of Tropisetron. Identification and control of these impurities are important to ensure the quality and safety of Tropisetron. Various analytical methods are used to detect and quantify these impurities in Tropisetron.