Trioctanoin-carboxyl-13C3 is primarily used in metabolic studies and research involving lipid metabolism. It serves as a stable isotope-labeled tracer, enabling scientists to track and analyze the absorption, distribution, and breakdown of lipids in biological systems. This compound is particularly valuable in studying fatty acid metabolism, energy utilization, and the role of medium-chain triglycerides (MCTs) in nutrition and health. It is also employed in clinical research to investigate metabolic disorders, such as obesity, diabetes, and cardiovascular diseases, providing insights into how the body processes fats. Additionally, it is used in the development and validation of analytical methods for lipid profiling in various biological samples.