4-Phenylbutyronitrile is widely used in organic synthesis as an intermediate for the production of various pharmaceuticals and agrochemicals. It serves as a key building block in the synthesis of compounds such as anti-inflammatory drugs and anticonvulsants. Additionally, it is utilized in the preparation of fine chemicals and specialty materials, including liquid crystals and polymers. Its nitrile group allows for further functionalization, making it valuable in creating complex molecular structures. In research, it is employed in the development of new chemical reactions and methodologies, particularly in the field of organic chemistry.