Used in the synthesis of pharmaceutical intermediates, particularly in the development of bioactive molecules and heterocyclic compounds. It serves as a building block in medicinal chemistry due to the presence of the benzothiazole ring, which is known for its biological activity. Commonly employed in the preparation of fluorescent dyes and sensors, especially those detecting metal ions or biological species. Also utilized in agrochemicals for developing new crop protection agents. Its reactivity allows for easy functionalization, making it valuable in combinatorial chemistry and drug discovery research.