Description
Glutathione GSH (CAS: 70-18-8) (L-Glutathione Reduced, γ-Glutamylcysteinylglycine, CAS 70-18-8) is an endogenous tripeptide composed of glutamic acid, cysteine, and glycine – the most abundant non-protein thiol found in virtually all living cells — supplied by AusPepLabs in lyophilized powder format for laboratory and analytical research applications. As the predominant intracellular antioxidant and a central mediator of cellular redox homeostasis, GSH is one of the most extensively studied compounds in cellular biology with thousands of published references across oxidative stress, detoxification, redox signaling, and protein biochemistry research. Each vial is independently verified to ≥99% HPLC purity with a Certificate of Analysis available on request. For scientific research use only.
Why Research Laboratories Select Glutathione GSH
Glutathione is the most abundant non-protein thiol in mammalian cells and one of the most fundamental reference compounds in cellular biology research. Its central role in maintaining cellular redox homeostasis — alternating between its reduced (GSH) and oxidized (GSSG) forms – makes it an essential tool for laboratories investigating oxidative stress models, reactive oxygen species (ROS) scavenging, thiol-dependent enzyme activity, glutathione S-transferase (GST) tag protein purification, and detoxification pathway biology.
- Most abundant non-protein thiol in mammalian cells – present at 1–10 mM in most cell types
- Primary endogenous antioxidant – scavenges reactive oxygen species and reactive nitrogen species in cellular research models
- GSH/GSSG ratio widely used as a biomarker of cellular oxidative stress in preclinical research models
- Essential cofactor for glutathione S-transferase (GST) -used extensively in GST-tag protein affinity purification
- Studied in xenobiotic detoxification, drug conjugation, and toxicology research models
- Referenced across thousands of peer-reviewed publications at Sigma-Aldrich, Abcam, Santa Cruz Biotechnology, and Selleckchem
- Freely soluble in water – easy to prepare aqueous research solutions at physiologically relevant concentrations

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