Used as an intermediate in the synthesis of dyes and pigments, particularly azo dyes, due to its ability to form diazonium salts. Employed in the pharmaceutical industry for developing sulfonamide-based drugs with antimicrobial properties. Also utilized in biochemical research as a derivatizing agent for carbonyl compounds in analytical detection methods. Its hydrazine functionality allows use in the preparation of hydrazone-linked conjugates for diagnostic and therapeutic applications.