Used as an intermediate in the synthesis of pharmaceutical compounds, particularly in the development of sulfonamide-based drugs with antimicrobial and anti-inflammatory properties. It serves as a building block in medicinal chemistry for designing enzyme inhibitors, especially in research targeting carbonic anhydrase and other sulfonamide-sensitive enzymes. Also employed in the preparation of functionalized polymers and specialty chemicals for diagnostic reagents. Its carboxylic acid and sulfonamide groups allow for easy derivatization, making it valuable in combinatorial chemistry and drug discovery.