2-Bromobenzyl mercaptan is primarily utilized in organic synthesis as a versatile building block for the creation of more complex molecules. Its structure, featuring both a bromine atom and a mercaptan group, makes it a valuable intermediate in the development of pharmaceuticals, agrochemicals, and specialty chemicals. The compound is often employed in coupling reactions, such as Suzuki or Heck reactions, where the bromine atom can facilitate cross-coupling with other aromatic systems. Additionally, the mercaptan group can participate in thiol-ene click chemistry, enabling the formation of sulfur-containing compounds with high efficiency. In material science, it is used to modify surfaces or polymers by introducing thiol functionalities, which can enhance adhesion or impart specific properties like corrosion resistance. Its role in synthesizing sulfur-containing heterocycles also makes it important in the development of biologically active compounds.