Epalrestat is a pharmaceutical drug used for the treatment of diabetic neuropathy. However, during the manufacturing process, impurities may be present which can affect the quality and safety of the drug. Epalrestat impurities can include degradation products, residual solvents, and other impurities that may be harmful to human health. Therefore, it is important to monitor and control the levels of these impurities to ensure the safety and efficacy of the drug.
