Used as a key intermediate in the synthesis of biologically active compounds, particularly in pharmaceutical research targeting kinase inhibitors. Its isothiocyanate group enables conjugation with amines, making it valuable in the development of targeted covalent inhibitors. Commonly employed in medicinal chemistry for structure-activity relationship (SAR) studies due to its ability to form stable adducts with cysteine residues in proteins. Also utilized in the preparation of fluorescent probes and labeled derivatives for biochemical assays.