Used as an intermediate in the synthesis of dyes and pigments, particularly in the production of azo dyes for textiles and inks. Also employed in the development of certain pharmaceuticals, where it acts as a building block for active ingredients with anti-inflammatory or antimicrobial properties, including sulfonamide-based antibiotics that inhibit enzymes involved in folic acid synthesis in bacteria, such as dihydropteroate synthase. Its sulfonamide structure makes it valuable in medicinal chemistry for designing enzyme inhibitors. Additionally, it finds use in research settings for labeling and derivatization in analytical methods.