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Glutathione

Glutathione

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Glutathione in its reduced form (GSH) is the tripeptide γ-L-glutamyl-L-cysteinylglycine, the principal low-molecular-weight thiol found in most cell types. It has the molecular formula C10H17N3O6S, a molecular weight of 307.33 g/mol and CAS number 70-18-8. Unlike a conventional peptide, its glutamate is joined to cysteine through the side-chain (γ) carboxyl rather than an α-peptide bond, so it is assembled by dedicated enzymes rather than on the ribosome. The free cysteine thiol makes it a redox buffer that cycles between reduced GSH and the disulfide-linked dimer GSSG, a distinct compound (C20H32N6O12S2, 612.6 g/mol). Supplied in 500mg and 1000mg vials as a white to off-white crystalline powder, highly water-soluble, stored sealed and refrigerated at 2–8 °C. This product is strictly for research purposes only.

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Proudly Made in the USA
USA manufactured · USA tested · Ships from Gilbert, AZ
USA Manufactured
USA Lab Tested
Ships from Gilbert, AZ

Overview

Glutathione in its reduced form (GSH) is a tripeptide — γ-L-glutamyl-L-cysteinylglycine — with the molecular formula C10H17N3O6S, a molecular weight of approximately 307.33 g/mol and CAS number 70-18-8. It is the most abundant low-molecular-weight thiol in most cell types. Its structure is unusual for a peptide: the glutamate residue is linked to cysteine through its side-chain γ-carboxyl group rather than through an α-peptide bond, which is why cells build it with two dedicated enzymes (γ-glutamylcysteine synthetase and glutathione synthetase) rather than on the ribosome, and why it resists most aminopeptidases.

The cysteine thiol is the reactive center of the molecule. In the published biochemistry GSH functions as an intracellular redox buffer, cycling between the reduced monomer and glutathione disulfide (GSSG), and serves as the reducing cosubstrate for glutathione peroxidases and the conjugating nucleophile for glutathione S-transferases. GSSG is a separate compound (C20H32N6O12S2, 612.6 g/mol) formed when two GSH molecules oxidize and join through a disulfide bond; because the free thiol oxidizes on exposure to air and moisture, the material should be kept sealed and refrigerated at 2–8 °C. Supplied in 500mg and 1000mg vials as a white to off-white crystalline powder, highly soluble in water and insoluble in DMSO.

This product is strictly for research purposes only. Not approved for human or animal use.

PubChem Reference: View compound profile on NIH PubChem

This product is strictly for research purposes only. Not approved for human or animal use.

Key Characteristics

MOLECULAR PROFILE

Formula: C10H17N3O6S

Weight: 307.33 g/mol

CAS: 70-18-8

PubChem CID: 124886

Sequence: γ-Glu-Cys-Gly (γ-glutamyl linkage)

Structure: Tripeptide, free thiol, reduced form (GSH)

PHYSICAL PROPERTIES

Form: White to off-white crystalline powder

Solubility: Highly soluble in water; insoluble in DMSO

Purity: ≥98% (HPLC)

Storage: Keep refrigerated 36‑46 °F (2‑8 °C), sealed, away from air and moisture

Weight 0.08 lbs
Dimensions 0.87 × 1.18 × 0.87 in
Size

500mg, 1000mg
SKU: OATH-GLUTATHIONE Categories: , Tag:
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