Cloprostenol is a synthetic prostaglandin analog used in veterinary medicine to induce labor and treat reproductive disorders in animals. However, the drug may contain impurities that can affect its potency and safety. These impurities may include residual solvents, by-products of synthesis, and degradation products. Therefore, it is important to monitor and control the levels of cloprostenol impurities to ensure the quality and efficacy of the drug.