Used as an intermediate in the synthesis of sulfa drugs, particularly in the production of sulfonamide antibiotics. It plays a key role in forming the core structure of antimicrobial agents that inhibit bacterial growth by interfering with folic acid synthesis. Also utilized in the development of dyes and pigments due to its aromatic and sulfonamide functional groups. Its amine group allows for easy modification in organic synthesis, making it valuable in pharmaceutical research and development.