Used in the synthesis of bioactive compounds, particularly in pharmaceutical research for developing kinase inhibitors. It serves as a key intermediate in creating covalent inhibitors due to the reactive isothiocyanate group, which can form stable thiourea linkages with amines in target proteins. Commonly employed in the development of targeted therapies, including anticancer agents, where it helps anchor the drug molecule to specific enzyme sites. Also utilized in chemical biology for labeling and probing protein interactions.