7-Oxooctadecanoic acid is primarily utilized in research and industrial applications related to lipid chemistry and organic synthesis. It serves as a key intermediate in the production of various fatty acid derivatives, which are essential in the development of surfactants, lubricants, and emulsifiers. In biochemical studies, this compound is often employed to investigate metabolic pathways involving fatty acid oxidation and degradation. Additionally, it finds use in the synthesis of specialized polymers and coatings, where its unique structure contributes to enhanced material properties. Its role in the study of lipid peroxidation and oxidative stress mechanisms is also noteworthy, making it valuable in biomedical and pharmaceutical research.