Propiconazole is a fungicide used to protect various crops from fungal infections. However, during the manufacturing process, impurities may be present in the final product. These impurities can affect the potency and safety of the fungicide. It is essential to monitor and control the impurities to ensure the effectiveness and safety of the product. Various analytical techniques, such as HPLC and GC-MS, are used to identify and quantify the impurities in propiconazole. The regulatory bodies also set limits for these impurities to ensure the quality of the product.