Glutathione — Compound Overview
A researcher-focused overview of glutathione: what the compound is, its chemistry, how it appears in the published literature, and how Index Peptides documents each batch.
Last updated: 2026-08-21 · By: Index Peptides technical team
Key facts
| Compound | Glutathione |
|---|---|
| CAS number | 70-18-8 |
| Molecular formula | C10H17N3O6S |
| Molecular weight | 307.3 g/mol |
| Sequence | γ-Glu-Cys-Gly (GSH) |
| Supplied formats | 1500mg per vial |
| Intended use | In-vitro laboratory research only |
What is glutathione?
Glutathione (GSH) is a tripeptide of γ-glutamyl-cysteine-glycine. It occurs endogenously in mammalian cells and is one of the most studied molecules in oxidative-stress research. Index Peptides supplies the reduced form, L-glutathione, produced for laboratory use.
Glutathione is classified as a research chemical in this context. It is not marketed as a medicine, and Index Peptides supplies it strictly for in-vitro laboratory research.
Glutathione in the research literature
Reduced glutathione appears across a large body of biochemistry literature concerned with redox state, oxidative stress models and analytical method development. The research context is broad and predominantly laboratory-based; Index Peptides takes no position on any application.
Form, handling and storage
Glutathione is supplied as a lyophilised (freeze-dried) powder in a sealed vial. Lyophilised material is best stored at -20°C, desiccated and protected from light; long-term stability data are batch-specific and recorded against the batch record.
Batch documentation at Index Peptides
Every released batch of glutathione is purity tested and identity confirmed, with the certificate of analysis published on the product page and verifiable by lot number through the batch lookup tool.
Frequently asked questions
Is glutathione approved for human use?
As a supplement it is widely sold in other markets, but Index Peptides supplies it strictly for in-vitro laboratory research — not for human or animal consumption, administration or any in-vivo use.
What is the CAS number for glutathione?
70-18-8 for reduced L-glutathione (GSH), with a molecular weight of approximately 307.3 g/mol.
How is each batch verified?
By reversed-phase HPLC for purity and LC-MS for identity. The certificate of analysis is published on the product page, and any batch can be checked by lot number on the verify page.
How do I reconstitute Glutathione?
Reconstitution is a laboratory handling procedure, not a use instruction. Our documentation-led reconstitution guide covers the mechanics of dissolving lyophilised peptide powders: https://indexpeptides.uk/guides/peptide-reconstitution-guide. Handling is the responsibility of the qualified researcher.
What is the shelf life of Glutathione?
As supplied (lyophilised powder in a sealed vial), Glutathione is stored at -20C, desiccated and protected from light. Long-term stability is documented per batch on the certificate of analysis; treat the batch record as the authoritative shelf-life reference for that lot.
What is the difference between the sizes?
The difference is the nominal peptide content per vial. Glutathione is supplied as 1500mg vials. Every format carries the same batch documentation and purity testing.
What does the certificate of analysis show?
Every released batch of Glutathione is documented with its certificate of analysis: the purity results, identity confirmation and the lot number, published on the product page and checkable through the batch lookup tool. The COA is the authoritative record for that batch.
References
Research use only. Not for human or animal consumption.