Ethyl pentadecanoate is primarily used in the flavor and fragrance industry due to its pleasant, waxy, and slightly fatty odor. It serves as a key ingredient in creating synthetic flavors that mimic natural essences, particularly in food products where a creamy or buttery note is desired. Additionally, it is utilized in perfumery to add depth and complexity to fragrance compositions, often contributing to the base notes. Its stability and compatibility with other compounds make it a versatile additive in cosmetic formulations as well, enhancing the sensory appeal of lotions, creams, and other personal care products.