Used as an intermediate in the synthesis of sulfa drugs, particularly sulfonamide antibiotics. It plays a key role in the production of antimicrobial agents that inhibit bacterial growth by interfering with folic acid synthesis. Commonly employed in pharmaceutical research and development for creating derivatives with enhanced therapeutic properties. Also utilized in the preparation of dyes and pigments due to its aromatic amine structure. Its reactivity makes it valuable in organic synthesis for building more complex molecules in medicinal chemistry.