Used primarily as a chiral derivatizing agent in analytical chemistry, particularly for the separation and determination of enantiomeric purity of amines and amino acids. Its isothiocyanate group reacts selectively with primary amines to form thiourea derivatives, which are more stable and easier to analyze by chromatographic or electrophoretic methods. Due to its chiral center, it enables stereoselective interactions, making it valuable in resolving racemic mixtures. Also employed in studies involving asymmetric synthesis and chiral recognition mechanisms.