Used primarily as an intermediate in organic synthesis, especially in the preparation of pharmaceuticals and fine chemicals. It serves as an alkylating agent due to the reactive bromine atom, enabling the introduction of the phenethyl group into various molecules. Commonly employed in the synthesis of active pharmaceutical ingredients (APIs), including central nervous system agents and cardiovascular drugs. Also utilized in the production of agrochemicals and specialty polymers where functional group transformation is required. Its ability to form carbon-carbon and carbon-heteroatom bonds makes it valuable in research and development laboratories for constructing complex molecular frameworks.