Niflumic acid is a non-steroidal anti-inflammatory drug (NSAID) used to treat pain and inflammation. Impurities are unwanted contaminants that may be present in the drug substance or product, which can affect the quality, safety, and efficacy of the drug. The identification, characterization, and quantification of impurities are critical to ensure product quality and regulatory compliance. Niflumic acid impurities may include degradation products, synthesis by-products, and other impurities that may arise from the manufacturing process. The control of impurities is an essential aspect of drug development and manufacturing to ensure patient safety and effectiveness.