4-Pentenenitrile is primarily used in organic synthesis as a versatile intermediate. It is often employed in the production of pharmaceuticals, where it serves as a building block for more complex molecules. Additionally, it is utilized in the manufacture of agrochemicals, contributing to the development of pesticides and herbicides. In the field of polymer chemistry, 4-Pentenenitrile can be incorporated into the synthesis of specialty polymers, enhancing their properties for specific applications. It also finds use in the creation of fine chemicals, where its reactivity is leveraged to produce various organic compounds.