2-Ethylcyclopentanone is primarily used as an intermediate in the synthesis of various organic compounds. It plays a significant role in the production of fragrances and flavors, contributing to the creation of unique aromatic profiles in perfumes and food products. Additionally, it is utilized in the development of pharmaceuticals, where it serves as a building block for more complex molecules. In the field of agrochemicals, it is employed in the formulation of certain pesticides and herbicides. Its versatile chemical structure makes it valuable in organic synthesis and industrial applications.