Used as an intermediate in the synthesis of sulfa drugs, particularly sulfonamide antibiotics. It plays a key role in pharmaceutical manufacturing due to its ability to form biologically active sulfone-linked compounds. Also employed in the production of dyes and pigments, where it contributes to color stability and lightfastness. Its structure supports conjugation in azo dyes, making it valuable in textile and ink industries. Additionally, it has been explored in polymer chemistry for creating heat-resistant and chemically stable resins.