Used as an intermediate in the synthesis of dyes and pigments, particularly in the production of azo dyes for textiles and inks. Also serves as a building block in the development of certain pharmaceuticals, including antimicrobial and anti-inflammatory agents. Its sulfonamide group contributes to biological activity in some drug candidates, making it valuable in medicinal chemistry research. Additionally, it finds use in the preparation of specialty polymers and as a reagent in organic synthesis for introducing functionalized aromatic amines.