5-Methyl-3-heptene (cis- and trans- mixture) is used primarily as an intermediate in the synthesis of flavor and fragrance compounds within the perfume, cosmetics, and aroma industries. Its unsaturated alkene structure enables diverse reactions, such as hydrogenation, epoxidation, or oxidation, to create derivatives with specific olfactory properties. The mixture of cis and trans isomers offers a versatile and balanced reactivity profile for developing complex scents and flavors. It is also utilized in research and development for high-purity applications in food, beverages, and consumer products.