Used in organic synthesis to introduce isothiocyanate functional groups into molecules, enabling the creation of compounds with potential biological activity. Commonly employed in the development of pharmaceuticals, particularly in the synthesis of drugs targeting cancer or inflammatory diseases. Also utilized in biochemical research as a labeling reagent for proteins and peptides, aiding in the study of protein structure and function. Its reactivity with amino groups makes it valuable for modifying biomolecules in proteomics and drug discovery.