4-Decenoic Acid is primarily used in the synthesis of various organic compounds, particularly in the production of flavors and fragrances. Its unique structure makes it a valuable intermediate in creating esters and other derivatives that impart fruity or floral notes to perfumes and food products. Additionally, it is utilized in research and development for studying lipid metabolism and biological processes due to its unsaturated fatty acid properties. In industrial applications, it serves as a precursor for polymers and specialty chemicals, contributing to the development of advanced materials.