Used as an intermediate in the synthesis of pharmaceuticals, particularly in the production of nonsteroidal anti-inflammatory drugs (NSAIDs). It serves as a building block for modifying molecular structures to enhance drug efficacy and selectivity. Also employed in the development of liquid crystals and specialty polymers due to its rigid aromatic structure and thermal stability. Its carboxylic acid functionality allows for easy derivatization, making it valuable in organic synthesis and medicinal chemistry research.