Used as an intermediate in the synthesis of pharmaceuticals, particularly in the development of antitumor and anti-inflammatory agents. It serves as a building block in medicinal chemistry due to the presence of the chlorobenzothiazole core, which is known for its biological activity. Commonly employed in the preparation of kinase inhibitors and other bioactive molecules. Also utilized in agrochemical research for developing new crop protection agents. Its ester functionality allows for easy modification, making it valuable in structure-activity relationship (SAR) studies.