Used as an intermediate in the synthesis of pharmaceuticals, dyes, and agrochemicals. Its sulfonic acid group allows for easy solubilization and further functionalization, making it valuable in creating water-soluble compounds. Commonly employed in the development of sulfa drugs and as a building block in organic synthesis where bromine acts as a site for cross-coupling reactions like Suzuki or Heck reactions. Also utilized in the production of specialty polymers and as a catalyst or modifier in certain chemical processes requiring acidic functionality with aromatic bromine substitution.