Used as a derivatization reagent in analytical chemistry, particularly in the detection and quantification of amines and amino acids. Its isothiocyanate group reacts selectively with primary amines to form stable thiourea derivatives, which are easier to analyze using techniques like HPLC or GC-MS. The presence of bromine atoms enhances detectability in mass spectrometry and can aid in crystallization for structural studies. It is also employed in the synthesis of heterocyclic compounds and pharmaceutical intermediates where brominated aromatic scaffolds are required. Its reactivity and labeling capability make it useful in biochemical assays and development of fluorescent probes when coupled with appropriate reporter molecules.