L-Glutathione
Endogenous Tripeptide - Principal intracellular antioxidant tripeptide for cellular-redox research.
L-Glutathione is an endogenous tripeptide and the principal intracellular antioxidant, studied for its role in redox balance, detoxification and cellular-protection research.
As the cell's principal small-molecule antioxidant, glutathione is studied less as a novel compound and more as a fundamental readout of redox state, detoxification capacity and oxidative stress. It appears across an enormous range of cell and animal research.
L-Glutathione specifications
- CAS number
- 70-18-8
- Molecular formula
- C10H17N3O6S
- Molecular weight
- 307.32 g/mol
- Sequence
- γ-Glu-Cys-Gly (tripeptide)
- Residues
- 3 residues (γ-Glu-Cys-Gly)
- Presentation
- Lyophilized powder
- Documented purity
- 99.83% by HPLC
- Available sizes
- 1500mg ($80)
- Archived COA lots
- 3
- Intended use
- Laboratory research use only. Not for human or veterinary use.
Studied pathways
- Redox buffering - Central thiol antioxidant studied across oxidative-stress and detoxification pathways.
Reported mechanisms in the literature
- Redox buffering - The principal intracellular thiol antioxidant, studied across oxidative-stress, detoxification and cellular-protection pathways. (Established biochemistry)
What L-Glutathione is researched for
- Redox balance - Studied as the principal intracellular antioxidant and readout of oxidative-stress state. (Established biochemistry)
- Xenobiotic clearance - Investigated for its role in phase-II detoxification and glutathione-conjugation pathways. (Established biochemistry)
L-Glutathione certificates of analysis on file
Every lot below was tested by an independent laboratory and the full report is published as a PDF. Purity is shown exactly as the report states it. The same records are searchable in the COA library and can be checked on the lot verification page.
| Lot | Tested | Size | Laboratory | HPLC purity | Identity | Certificate |
|---|---|---|---|---|---|---|
| CPE57R | 12 Aug 2026 | 1500mg | Freedom Diagnostics | 99.40% | Confirmed (LC-MS/MS) | COA PDF |
| GTT1500-WM2607-001 | 4 Aug 2026 | 1500mg | Accurate Test Labs | 99.31% | Confirmed (LC-MS/MS) | COA PDF |
| FD-2605060429 | 6 May 2026 | 1500mg | Freedom Diagnostics | 99.73% | Confirmed (LC-MS/MS) | COA PDF |
Published literature on L-Glutathione
The mechanisms above trace to peer-reviewed studies indexed on PubMed. These are independent third-party publications, not Aspect Peptides claims. Browse indexed research on PubMed.
L-Glutathione frequently asked questions
What is L-Glutathione?
An endogenous tripeptide and the body's principal intracellular antioxidant, studied for redox balance, detoxification and cellular protection.
Is it a drug?
No. It is a naturally occurring molecule supplied as a research reference material, not a medicine or supplement.
What is it researched for?
Redox buffering, oxidative-stress response and detoxification pathways in cell and animal models.
Documented to 99.83% purity by HPLC · third-party COA every lot · from $80 · For laboratory research use only.
Related Longevity & Cellular compounds
- NAD+ - Coenzyme central to cellular energy and repair research.
- Epithalon - Tetrapeptide studied for telomerase and circadian research.
- Cartalax - Ala-Glu-Asp tripeptide bioregulator studied in connective-tissue research.
- SS-31 - Cardiolipin-targeting peptide studied for mitochondrial function.
- Thymosin Alpha-1 - Thymic peptide studied for immune modulation.