Pelubiprofen is a nonsteroidal anti-inflammatory drug (NSAID) used to treat pain and inflammation. However, it may contain impurities that could affect its quality and safety. These impurities may arise during the manufacturing process or storage of the drug. Some of the potential impurities in Pelubiprofen may include related substances, residual solvents, and degradation products. The presence of such impurities may compromise the drug's efficacy and safety. Therefore, it is crucial to monitor and control the impurities in Pelubiprofen to ensure its quality and safety.