Used as an intermediate in the synthesis of pharmaceuticals and agrochemicals, particularly in the development of sulfone-based active ingredients. Its reactive sulfonyl chloride group enables easy attachment to various nucleophiles, making it valuable in constructing complex molecules. Commonly employed in the preparation of sulfa drugs and kinase inhibitors due to its ability to enhance metabolic stability and binding affinity. Also utilized in the creation of functionalized aromatic compounds for use in liquid crystals and specialty polymers.