Used in organic synthesis as a derivatizing agent for amines and other nucleophiles due to the reactivity of the isothiocyanate group. Commonly employed in the preparation of thiourea derivatives, which are valuable intermediates in pharmaceuticals and agrochemicals. Also utilized in analytical chemistry for the detection and quantification of amino compounds through formation of colored or fluorescent products. Its ester functionality allows further chemical modifications, making it useful in multi-step synthesis and in the development of functional materials.