9-Aminononanoic acid is primarily used in the synthesis of polyamide resins and polymers. These materials are essential in the production of high-performance fibers, coatings, and adhesives. Its incorporation into polymers enhances their mechanical strength, thermal stability, and chemical resistance, making it valuable in industrial applications such as automotive parts, textiles, and packaging. Additionally, it serves as a precursor in the development of specialty chemicals, including surfactants and corrosion inhibitors, which are utilized in various manufacturing processes. Its versatility also extends to biomedical research, where it is employed in the creation of biodegradable materials and drug delivery systems.