Used in the synthesis of fine chemicals and pharmaceuticals, ethyl 7-octenoate serves as a versatile intermediate due to its reactive terminal double bond and ester functionality. It is commonly employed in organic transformations such as hydrogenation, epoxidation, and metathesis reactions to build more complex molecules. Its structure allows for selective modifications, making it valuable in the development of fragrances, flavors, and specialty polymers. Additionally, it acts as a building block in the preparation of lactones and long-chain esters used in perfumery and agrochemicals.