Used in the synthesis of heterocyclic compounds, particularly in the preparation of benzothiazole derivatives, which are important in the pharmaceutical and biotech industries for developing antimicrobial, antifungal, anti-inflammatory, antiviral agents, and antioxidants. Also serves as an intermediate in the production of dyes and fluorescent whiteners for textiles and paper. Its reactivity makes it valuable in coordination chemistry for forming metal complexes used in catalysis, material science, and as fluorescent sensors for detecting certain metal ions.