7-Methylnonanoic acid is primarily used in the fragrance and flavor industry. Its unique structure contributes to the development of complex scents, often adding a musky or earthy note to perfumes and colognes. In flavor formulations, it can enhance the richness of certain food products, providing a subtle, fatty, or cheesy undertone. Additionally, it serves as an intermediate in the synthesis of more complex organic compounds, particularly in the production of specialty chemicals. Its applications are also explored in research for developing novel materials or bioactive molecules due to its specific alkyl chain configuration.