Used as an intermediate in the synthesis of pharmaceuticals, particularly in the development of antihypertensive and antiviral agents. It serves as a building block in the preparation of benzothiazole-based compounds that exhibit biological activity, including kinase inhibitors and antimicrobial agents. Its structure allows for easy functionalization, making it valuable in medicinal chemistry for drug discovery and optimization. Also employed in the creation of dyes and fluorescent probes due to its heterocyclic core, which can enhance photophysical properties in sensing applications.