Used primarily as a versatile building block in organic synthesis, especially in the preparation of pharmaceuticals and bioactive molecules. Its isothiocyanate group readily reacts with amines to form thiourea derivatives, which are important in drug discovery for their biological activity, including anticancer and antimicrobial properties. The bromomethyl group allows further functionalization through nucleophilic substitution, enabling the construction of complex molecular architectures. It is also employed in the synthesis of fluorescent probes and labeled compounds for biochemical assays due to its ability to anchor to biomolecules. Its dual reactivity makes it valuable in combinatorial chemistry and the development of compound libraries for high-throughput screening.