L-Glutathione Oxidized is a naturally synthesized peptide in human cells, which is composed of glutamate, cysteine and glycine. Oxidized glutathione (GSSG) is a kind of glutathione, which is prepared by oxidation of reduced glutathione with hydrogen peroxide under alkaline conditions. Soluble in water, insoluble in ethanol. It can be used for scientific research and experiment. It is a hydrogen receptor for enzymatic determination of NADP and NADPH.   Function 1.L-Glutathione Oxidized/Oxidized glutathione is a tripeptide that contains an unusual peptide linkage between the amine group of cysteine (which is attached by normal peptide linkage to a glycine) and the carboxyl group of the glutamate side-chain. It is an antioxidant, preventing damage to important cellular components caused by reactive oxygen species such as free radicals and peroxides. 2.L-Glutathione Oxidized/Oxidized glutathione are reducing agents, existing at a concentration of approximately 5 mM in animal cells.Glutathione reduces disulfide bondsformed within cytoplasmic proteins to cysteines by serving as an electron donor.In the process, glutathione is converted to its oxidized form glutathione disulfide (GSSG), also called L(-)-Glutathione. 3.L-Glutathione Oxidized/Oxidized glutathione is found almost exclusively in its reduced form, since the enzyme that reverts it from its oxidized form,glutathione reductase, is constitutively active and inducible upon oxidative stress.In fact, the ratio of reduced glutathione to oxidized glutathione within cells is often used as a measure of cellular toxicity Application 1.Protect Liver and detoxicant. 2. Biochemical reagent 3. Enhancing the Immune System 4. Free Radical Scavenger 5. Skin Whitening