Cys-Gly, oxidized, is primarily utilized in biochemical research and pharmaceutical studies. It serves as a model compound to investigate the behavior of oxidized dipeptides, particularly in understanding oxidative stress mechanisms and protein degradation pathways. This compound is also used in enzymatic studies to explore the activity of enzymes like gamma-glutamyl transpeptidase, which plays a role in glutathione metabolism. Additionally, it is employed in the development of analytical methods, such as mass spectrometry and chromatography, to detect and quantify oxidized peptides in biological samples. Its applications extend to studying the impact of oxidation on cellular processes and the potential development of therapeutic agents targeting oxidative damage.