Amodiaquine is an antimalarial drug that is commonly used to treat and prevent malaria infections. However, during the manufacturing process, impurities may be introduced into the drug, which can affect its efficacy and safety. Some of the common impurities found in amodiaquine include related substances, residual solvents, and degradation products. It is essential to identify and control these impurities to ensure that the drug is of high quality and safe for use.