Glutathione

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Factory Supply High Purity L-glutathione 70-18-8 in Stock Introduction to L-glutathione 70-18-8 1 Glutathione (GSH) 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 Thiol groups 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 Glutathione. 3 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. 1.Product name: L-Glutathione 70-18-8 2.CAS No.: 70-18-8 3.Specification : Food grade, pharmaceutical grade 4. Molecular Formula : C20H32N6O12S2 5. Molecular Weight : 612.63 6. Purity : 98%-101% by HPLC Specification of L-glutathione 70-18-8 Test Items Specifications Appearance White or almost white crystalline powder Solubility Freely soluble in water,practically insoluble in ethanol(99.50%) Identification Passes test Melting Point About 185°C (with decomposition) Clarity and color of solution Clear and colourless Assay( On dry basis) 98.0% - 101.0% Specific optical rotation(after drying) -15.50~-17.50 Specification of L-glutathione 70-18-8 Test Items Specifications Appearance White or almost white crystalline powder Solubility Freely soluble in water,practically insoluble in ethanol(99.50%) Identification Passes test Melting Point About 185°C (with decomposition) Clarity and color of solution Clear and colourless Assay( On dry basis) 98.0% - 101.0% Specific optical rotation(after drying) -15.50~-17.50 Loss on drying ≤0.5% Residue on Ignition ≤0.10% Related Substances(Total) ≤ 2.0% Related Substances(GSSG) ≤ 1.5%: Heavy metals ≤10.0 ppm Arsenic ≤2.0ppm Loss on drying ≤0.5% Residue on Ignition ≤0.10% Related Substances(Total) ≤ 2.0% Related Substances(GSSG) ≤ 1.5%: Heavy metals ≤10.0 ppm