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Original illustration for Glutathione research notes: abstract molecular artwork in orange and teal
Original illustration by USA Peptide Vendors; artistic, not a structural model.

Bench sheet · Small molecule

Glutathione: bench notes and specs

Cellular thiol antioxidant made from glutamate, cysteine and glycine. Glutathione is the main non-protein thiol in cells, used by antioxidant and detoxification enzymes.

Cofactors & DiluentsCAS 70-18-8GSHγ-L-Glutamyl-L-cysteinylglycineUpdated 2026-11-09
  1. 01

    What's in it

    Cellular thiol antioxidant made from glutamate, cysteine and glycine.

    Glutathione is the main non-protein thiol in cells, used by antioxidant and detoxification enzymes. Purgo sells it by the gram.

  2. 02

    Reference values

    γ-Glu-Cys-Gly: the glutamate is linked through its side-chain carboxyl, so it isn't drawn as a standard peptide chain.

    • CAS number70-18-8
    • Molecular formulaC10H17N3O6S
    • Molecular weight307.33 g/mol
    • PubChem CID124886

    Verified 2026-11-09 against PubChem CID 124886. Values we couldn't verify are left out.

  3. 03

    Handling and paperwork

    • Match the CAS number on the certificate to 70-18-8.
    • Identity testing should match C10H17N3O6S (307.33 g/mol).
    • 30 of the 112 vendors in our directory list Glutathione; 17 of those name the lab that tests it.
  4. 04

    Sourcing

    30 of 112 directory vendors list Glutathione; 17 name their testing lab.

Biochemistry

Evidence level: Established biochemistry (review). All mechanism maps

Glutathione mechanism diagramTwo-step synthesis and the main jobs of the cell's thiol antioxidant. Targets: Peroxide removal, Conjugation, Thiol redox buffer. Synthesis: Glu + Cys → GCL → GS → GSH. Outcomes: Oxidative stress ↓, Detoxification, Protein thiol protection.Glutathione mechanism mapTwo-step synthesis and the main jobs of the cell's thiol antioxidantGlutathioneγ-Glu-Cys-GlyPeroxide removalglutathione peroxidase[1]ConjugationglutathioneS-transferases [1]Thiol redox bufferGSH ⇄ GSSG [1]Oxidative stress ↓[1]Detoxification[1]Protein thiolprotection[1]Glu + Cys[1]GCLrate-limiting [1]GS → GSH[1]Evidence: Established biochemistry (review). Numbers in brackets refer to the citedsources.usapeptidevendors.com · Research Use OnlyROLES IN THE CELLOUTCOMESSYNTHESIS
This shows intracellular glutathione. Supplied glutathione is largely broken down before it enters cells. Open SVG
  1. Lu SC et al. Glutathione synthesis. Biochim Biophys Acta. 2013;1830:3143-53.

FAQ

What is Glutathione?

Cellular thiol antioxidant made from glutamate, cysteine and glycine. Glutathione is the main non-protein thiol in cells, used by antioxidant and detoxification enzymes. Purgo sells it by the gram.

What are Glutathione's CAS number and molecular weight?

CAS 70-18-8, formula C10H17N3O6S, 307.33 g/mol, per PubChem CID 124886.

Where can US labs buy Glutathione?

Purgo Labs stocks it as “Glutathione”; code usapeptidevendors takes 25% off at checkout. This page also lists the best-documented second vendor from our 112-vendor directory.

Is research-grade Glutathione for human use?

No. Vendor material is sold for Research Use Only, not for human or veterinary use.