L-Glutathione

L-Glutathione (Reduced, GSH) | Antioxidant Tripeptide | Research Use Only

L-Glutathione (reduced form, GSH) is a naturally occurring tripeptide composed of L-glutamic acid, L-cysteine, and glycine, linked through a characteristic gamma-glutamyl bond. As the most abundant intracellular low-molecular-weight thiol, glutathione is a central component of the cellular redox system and a widely used reference compound in laboratory research on oxidative stress and antioxidant biochemistry.

In research settings, reduced glutathione (GSH) is studied for its role in maintaining cellular redox homeostasis, scavenging reactive oxygen species, and participating in the glutathione / glutathione-disulfide (GSH/GSSG) cycle. It is frequently used as a standard and substrate in in-vitro assays examining thiol chemistry, enzyme kinetics, and cellular antioxidant-defense pathways.

Research Specifications

• Synonyms: L-Glutathione reduced, GSH, gamma-L-Glutamyl-L-cysteinylglycine
• Structure: gamma-L-Glutamyl-L-Cysteinyl-Glycine (tripeptide)
• Molecular Formula: C10H17N3O6S
• Molecular Weight: ~307.32 g/mol
• CAS Number: 70-18-8
• Purity: ≥99% (HPLC verified)
• Form: Lyophilized powder
• Storage: -20°C, protected from light and moisture

Made in the USA from imported peptide APIs (purified, filled and lyophilized domestically) and independently third-party tested. A Certificate of Analysis is published for every shipped lot – look yours up with our COA verification tool.

For Research Use Only. This product is not intended for human or veterinary use, diagnosis, or treatment. Not a drug, supplement, or medical device. Not evaluated by the FDA. For qualified research applications only.

Chemical identity & references
PubChem CID 124886 · CAS 70-18-8 · C10H17N3O6S, 307.33 g/mol

Molecular weights shown are nominal identity values; salt or complex form and net peptide content are stated on each lot’s Certificate of Analysis. Verify this lot’s COA.