Zileuton Impurities refer to the substances that are present in Zileuton, a drug used to treat asthma by blocking the production of leukotrienes. These impurities can affect the quality, safety, and efficacy of the drug. Therefore, it is essential to identify and quantify these impurities to ensure the drug's purity and potency. The knowledge of Zileuton Impurities is crucial for the development and manufacture of high-quality medicines.