This compound is primarily utilized in research and analytical chemistry as a stable isotope-labeled internal standard. It is particularly valuable in mass spectrometry-based metabolomics and proteomics studies, where it aids in the accurate quantification of metabolites or proteins. Its deuterium labeling ensures minimal interference with the natural isotopic distribution, enhancing precision in measurements. Additionally, the compound’s structure makes it suitable for investigating biochemical pathways involving cysteine derivatives, such as those related to detoxification processes or oxidative stress. Its application extends to pharmaceutical research, where it helps in the development and validation of analytical methods for drug metabolism studies.