Used as an important intermediate in the synthesis of sulfonamide antibiotics, particularly in the production of drugs like sulfathiazole, which exhibit antimicrobial properties. It plays a key role in the pharmaceutical industry for constructing benzothiazole-based active pharmaceutical ingredients (APIs). Its structure allows for easy functionalization, making it valuable in developing bioactive molecules with potential antifungal, antibacterial, and anti-inflammatory activities. Also utilized in research for designing new therapeutic agents and in the development of fluorescent probes due to the inherent optical properties of the benzothiazole core.