Monepantel is an anthelmintic drug used for the treatment of parasitic worm infections in livestock. However, like all pharmaceuticals, it is critical to ensure that it is of high purity and free of impurities that could potentially compromise its efficacy and safety. Monepantel impurities refer to any undesired substances that may be present in the drug product, either as a result of the manufacturing process or during storage. Identifying and quantifying these impurities is essential for ensuring the quality of the drug product and compliance with regulatory requirements.