Used primarily in organic synthesis, this compound serves as a key reagent for introducing the 3-phenylpropionyl group into various molecules. It is widely employed in the production of pharmaceuticals, particularly in the synthesis of active pharmaceutical ingredients (APIs) where it acts as an acylating agent. Additionally, it finds application in the preparation of fine chemicals and intermediates for agrochemicals. Its reactivity with amines and alcohols makes it valuable for creating esters and amides, which are crucial in developing compounds with specific biological activities. In research, it is utilized to modify peptides and other biomolecules to study their structure-activity relationships.