Used primarily as an alkylating agent in organic synthesis, this compound is valued for its ability to transfer phenethyl groups under mild conditions. It plays a key role in the preparation of pharmaceutical intermediates, especially in the development of bioactive molecules and medicinal agents. Its selectivity and reactivity make it suitable for modifying nitrogen and oxygen-containing substrates in research settings. Due to its reactivity with nucleophiles, it is also employed in the study of reaction mechanisms and in the design of functionalized organic compounds for drug discovery.