Used as an intermediate in the synthesis of pharmaceuticals and agrochemicals, particularly in the development of sulfonamide-based drugs. It also serves in the preparation of dyes and fluorescent whiteners due to its heterocyclic structure. Its benzothiazole moiety contributes to biological activity, making it valuable in research for antimicrobial and antitumor compounds. Additionally, it is employed in analytical chemistry as a derivatizing agent for detection of certain functional groups.