Displaying 2 results of Tolfenamic Acid Impurities Tolfenamic acid is a nonsteroidal anti-inflammatory drug (NSAID) that is used to relieve pain and inflammation associated with various conditions. However, during the manufacturing process of tolfenamic acid, impurities are often introduced. These impurities can affect the quality, safety, and efficacy of the drug, and thus need to be carefully monitored and controlled. Some common tolfenamic acid impurities include related compounds such as 2-chlorotoluene, 3-chlorotoluene, and 4-chlorotoluene. It is important to ensure that tolfenamic acid products are free from these impurities to ensure their safety and effectiveness.