This compound is primarily used in research and analytical chemistry as a stable isotope-labeled internal standard. It aids in the accurate quantification and analysis of metabolites in biological samples, particularly in studies involving glutathione metabolism and oxidative stress. The deuterium labeling ensures minimal interference with natural metabolic processes, making it valuable for mass spectrometry-based assays. Its application extends to pharmacokinetic studies, where it helps track the absorption, distribution, and excretion of related compounds. Additionally, it is utilized in the development of diagnostic tools for assessing cellular health and detoxification pathways.