Fenspiride is a medication that is used to treat respiratory conditions. However, like all drugs, it is not completely pure and may contain impurities. These impurities can have an impact on the effectiveness and safety of the drug. Therefore, it is important to monitor and control the levels of impurities in fenspiride to ensure that it is safe and effective for patients. The impurities in fenspiride can be analyzed and identified using various techniques such as high-performance liquid chromat