Used in the synthesis of pharmaceutical intermediates, particularly in the development of kinase inhibitors for cancer treatment. Its sulfone and carboxylic acid functional groups allow for strong hydrogen bonding and polarity, making it valuable in drug design for improving solubility and binding affinity. Also employed in agrochemicals as a building block for herbicides and plant growth regulators. Commonly utilized in research settings for structure-activity relationship (SAR) studies due to its rigid aromatic core and polar side chain.