Used as an intermediate in organic synthesis, particularly in the production of pharmaceuticals and agrochemicals. Acts as a building block for sulfanyl-containing compounds due to the presence of the thiol group. Employed in the development of dyes and pigments for its reactivity in coupling reactions. Also utilized in polymer chemistry to modify resin properties or act as a chain transfer agent. Its functional groups allow for metal coordination, making it useful in catalyst design and analytical reagents for metal ion detection.