2-Phenylbutyronitrile is primarily used as an intermediate in the synthesis of various pharmaceuticals and organic compounds. It plays a key role in the production of active pharmaceutical ingredients (APIs), particularly in the development of drugs targeting neurological and cardiovascular disorders. Additionally, it serves as a building block in the creation of complex organic molecules, including agrochemicals and specialty chemicals. Its nitrile group makes it a versatile precursor for further chemical transformations, such as hydrolysis or reduction, to yield valuable derivatives. In research, it is employed in organic synthesis to explore new reaction pathways and develop novel compounds with potential industrial or medicinal applications.