Used as a building block in organic synthesis, particularly in pharmaceuticals and agrochemicals. Its aromatic sulfur-containing structure makes it valuable for creating active ingredients in drug development, including antipsychotic and anti-inflammatory agents. Also employed in the production of specialty polymers and ligands for catalysts. Its carboxylic acid group allows easy modification for ester or amide formation, enabling integration into complex molecules. Commonly found in research settings for designing new materials and bioactive compounds.