5-Oxononanoic acid is primarily utilized in the field of organic synthesis, where it serves as a key intermediate in the production of various complex molecules. Its carbonyl and carboxyl functional groups make it a versatile building block for the synthesis of pharmaceuticals, particularly in the development of anti-inflammatory and antimicrobial agents. Additionally, it is employed in the creation of specialty chemicals, including fragrances and flavoring agents, due to its ability to impart unique olfactory properties. In material science, this compound is explored for its potential in polymer modification, enhancing the properties of plastics and coatings. Its role in biochemical research is also notable, as it is used in studies related to metabolic pathways and enzyme activity.