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Routine Peptides
HPLC tested
Representative HPLCPer lot
L-Glutathione research vial

Longevity & Cellular

L-Glutathione

Oxidative Stress Studies

Third-party testedCOA per lotView COA · 99.31%
$1201500mg · $0.08/mg

Quantity

1

Ships from the United States with tracking · free shipping over $200

PassedSterility & Endotoxins
PassedNet Content & Purity
Research use only
Third-party tested
COA with every lot
Tracked shipping

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Authenticity

Every vial carries a code

Scan the code on the label to pull up every published certificate for that compound — the same reports the third-party laboratory issued, batch by batch. Traceable from the laboratory that tested it to your bench.

Verify a batch →

Verified, lot by lot

Per lot
  • Independently tested

    Purity is quantified by reverse-phase HPLC and identity confirmed by mass spectrometry, by an outside laboratory rather than in-house.

  • A certificate for your lot

    The report that ships with your order describes the batch you received — not the product line, and not a representative sample.

  • COA-backed replacement

    If material does not match the certificate issued for its lot, we replace it or refund it. Send us the lot number and we will trace it.

  • Tracked dispatch

    Tracking is issued when the label is created, so the shipment is traceable from the moment it leaves us.

🔬
1000+
Published Studies
Redox biology & antioxidant research
🧬
3
Amino Acids
Glu-Cys-Gly tripeptide
⚗️
100:1
GSH:GSSG Ratio
Physiological redox couple
🎯
4
Research Areas
Oxidative Stress & Antioxidant Defense · Ferroptosis & Lipid Peroxidation · Nrf2/HO-1 Pathway Signaling & more

About this compound

What L-Glutathione is

C₁₀H₁₇N₃O₆S

Glutathione is a tripeptide and the most abundant intracellular antioxidant in mammalian cells. It cycles between reduced and oxidised forms, and the ratio between them is used across the literature as a working index of cellular oxidative state — which is why it appears as a measurement as often as a subject.

Formula
C₁₀H₁₇N₃O₆S
Molecular weight
307.32 g/mol
Form
Lyophilized powder
CAS / ID
70-18-8
Read the full L-Glutathione research monograph →

Full specification

Sequence
γ-L-Glutamyl-L-Cysteinyl-Glycine
Molecular weight
307.32 g/mol
Molecular formula
C₁₀H₁₇N₃O₆S
Physical form
Lyophilized powder
Documented purity
Quantified by HPLC, reported per lot
Storage
-20°C for long-term stability
Solubility
Water-soluble

How it works

How L-Glutathione works

The pathways L-Glutathione acts on, and what each one does. Signalling described from preclinical models.

Free Radical Scavenging

Direct Antioxidant

The free thiol group donates electrons directly to reactive species, which is how it acts as an antioxidant without requiring an enzyme to mediate.

  • Scavenges reactive species, radicals and peroxides directly
  • The cysteine thiol is the redox-active site
  • Protects proteins, lipids and DNA from oxidation

GPx & GST Catalysis

Enzyme Cofactor

It is also the substrate for glutathione peroxidase and S-transferase — enzymes that cannot function without it. That makes the tripeptide a cofactor as much as a scavenger.

  • Co-substrate for selenium-dependent GPx enzymes
  • GPx4 cofactor, central to ferroptosis research
  • Drives S-transferase detoxification reactions

Cellular Redox Homeostasis

Redox & Detox

The ratio of reduced to oxidised glutathione is used across the literature as a working index of cellular redox state, which is why the molecule appears as a measurement as often as a subject.

  • GSH:GSSG ratio sets redox tone, around 100:1 when healthy
  • Conjugates xenobiotics and electrophiles
  • Associated with Nrf2/HO-1 signalling

Uses & applications

What L-Glutathione is researched for

The main areas under study, and the study-reported figures behind them.

REDOX BIOLOGY

Oxidative Stress & Antioxidant Defense

The reduced-to-oxidised ratio serves as the working index of cellular oxidative state across this literature.

Frontiers Pharmacol. 2014

CELL BIOLOGY

Ferroptosis & Lipid Peroxidation

Depletion is a defining step in ferroptosis, which makes the tripeptide central to that field rather than incidental to it.

Cell Death & Disease 2023

CYTOPROTECTION

Nrf2/HO-1 Pathway Signaling

Nrf2 governs the transcription of the enzymes that synthesise and use it, so the pathway and the molecule regulate each other.

Lee et al. 2019

BIOCHEMISTRY

Detoxification & Redox Defense

Conjugation by S-transferases is the mechanism, with xenobiotic clearance measured as the outcome.

Rai R. 2021

What the published work measures

The endpoints reported across the literature for this compound. The figures belong to the individual papers, not to us.

  • Hydrogen Peroxide Reduction
  • Lipid Peroxide Detoxification
  • Xenobiotic Conjugation
  • Cellular GSH:GSSG Ratio (healthy)

Molecular structure

The L-Glutathione molecule

The deposited three-dimensional conformer for this compound, paired with its verified reference values.

Drag to rotate

37 atoms

SONCH

37 atoms, 36 bonds, C10H17N3O6S. Deposited conformer from PubChem CID 124886, not a drawing.

C₁₀H₁₇N₃O₆S

Molecular formula
C₁₀H₁₇N₃O₆S
Molecular weight
307.32 g/mol
Sequence length
3 residues
CAS / ID
70-18-8
Physical form
Lyophilized powder
Documented purity
Quantified by HPLC, reported per lot

Third-party verified

Independently tested, lot by lot.

Every batch of L-Glutathione is sent to an accredited independent laboratory before it ships. Here is what we screen for.

HPLC purity analysis

Quantifies purity and reports it on the lot certificate

Mass spectrometry

Verifies the exact molecular identity

Heavy metals screening

Lead, arsenic, cadmium & mercury

Endotoxins (LAL)

Bacterial endotoxin levels

Sterility testing

No microbial contamination

Net peptide content

Actual peptide mass per vial verified

FAQ

Common questions about L-Glutathione

What is L-Glutathione?

+

Glutathione is a tripeptide and the most abundant intracellular antioxidant in mammalian cells. It cycles between reduced and oxidised forms, and the ratio between them is used across the literature as a working index of cellular oxidative state — which is why it appears as a measurement as often as a subject.

What is L-Glutathione researched for?

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Published research on L-Glutathione concentrates on Oxidative Stress & Antioxidant Defense, Ferroptosis & Lipid Peroxidation, Nrf2/HO-1 Pathway Signaling and Detoxification & Redox Defense. Each of those areas is summarised further up this page with the citation it comes from, and the full reference list — 4 indexed publications — sits at the bottom. Study designs and concentrations vary considerably between publications, so the primary sources are worth reading directly.

How does L-Glutathione work?

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The literature describes L-Glutathione acting across Free Radical Scavenging, GPx & GST Catalysis and Cellular Redox Homeostasis, reported respectively as Direct Antioxidant, Enzyme Cofactor and Redox & Detox. Those pathways are drawn from preclinical models rather than clinical work, and they describe what has been observed rather than a settled mechanism — the individual pathway cards above cite what each one is based on.

What are the molecular specifications for L-Glutathione?

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L-Glutathione has a molecular formula of C₁₀H₁₇N₃O₆S, an average mass of 307.32 g/mol and the sequence γ-L-Glutamyl-L-Cysteinyl-Glycine. It is indexed under CAS 70-18-8. It ships as lyophilized powder. Those are nominal reference values for the parent compound. The identity of the specific material you receive is confirmed by mass spectrometry and reported on that lot's certificate.

How should L-Glutathione be stored and reconstituted?

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Store the sealed vial at -20°C, protected from light and moisture, and let it reach room temperature before opening so condensation does not form on cold powder. L-Glutathione is water-soluble; reconstitute by directing the diluent down the vial wall rather than onto the powder, then swirl to dissolve rather than shaking. Keep reconstituted solution refrigerated and avoid repeated freeze-thaw cycles — solutions are far less stable than lyophilized powder.

Is L-Glutathione approved for human use?

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No. L-Glutathione is supplied strictly for in-vitro laboratory research and development. It is not a drug, food, supplement or cosmetic, it has not been evaluated by the FDA, and it is not intended for human or animal consumption, ingestion, injection or any in-vivo use. Ordering confirms you are a qualified researcher or institution purchasing on that basis.

Cited sources

Peer-reviewed literature

Independent published research indexed from PubMed and peer-reviewed journals — not Routine Peptides claims.

  1. [1]JOURNALGlutathione: New Roles in Redox Signaling for an Old Antioxidant (opens in a new tab)2014 · Frontiers in PharmacologyView source →
  2. [2]JOURNALGlutathione System Enhancement for Cardiac Protection: Options Against Oxidative Stress and Ferroptosis (opens in a new tab)2023 · Cell Death & DiseaseView source →
  3. [3]PMCProtective Effect of Glutathione Against Oxidative Stress-Induced Cytotoxicity in RAW 264.7 Macrophages via the Nrf2/HO-1 Pathway (opens in a new tab)2019 · Lee D et al.View source →
  4. [4]JOURNALGlutathione: Role in Oxidative/Nitrosative Stress, Antioxidant Defense, and Treatments (opens in a new tab)2021 · Rai R et al.View source →

For research use only

Not for human or veterinary use. For in-vitro laboratory research only. These statements have not been evaluated by the FDA; this product is not intended to diagnose, treat, cure, or prevent any disease. Sold exclusively to qualified researchers and institutions.

Before you order

Quality Becomes RoutineMeasured. Verified. Documented.

Every production run is analyzed by an independent laboratory, and the certificate for your lot travels with the order — not a catalog-wide document, and not a summary written by us.