L-2-Aminobutyric Acid-d6 is primarily used in research and development as a stable isotope-labeled compound. It serves as an internal standard in mass spectrometry for the accurate quantification of L-2-Aminobutyric Acid in biological samples. This compound is particularly valuable in metabolic studies, where it helps trace and analyze metabolic pathways and fluxes. Additionally, it aids in the investigation of amino acid metabolism disorders, providing insights into disease mechanisms and potential therapeutic targets. Its deuterium labeling ensures minimal interference with natural metabolic processes, making it a reliable tool in isotopic labeling experiments.