Glutathione 1500mg
£27.99 per vial · Peptides · Research use only
About Glutathione 1500mg
Glutathione 1500mg is reduced L-glutathione (GSH), a tripeptide research material, supplied as lyophilised powder in a single vial for in-vitro laboratory research.
Product specifications
- Compound
- Glutathione
- Declared content
- 1500mg per vial
- Format
- Lyophilised powder
Batch documentation
The current published lot is IP-GLUT1500-001. The batch record from Janoshik Analytical (CZ), dated 24 August 2026, lists reported purity of 99.277% (RP-HPLC) and measured content of 1629.23 mg/vial.
View the certificate of analysis →
Intended use
For in-vitro laboratory research only. Not for human or veterinary use.
Technical notes and further reading
- CAS number
- 70-18-8
- Molecular formula
- C10H17N3O6S
- Molecular weight
- 307.3 g/mol
- Sequence
- γ-Glu-Cys-Gly (GSH)
Specification
| SKU | GLU15 |
|---|---|
| Compound | Glutathione |
| Price | £27.99 per vial |
| Format | 1500mg per vial |
| Availability | In stock |
| CAS number | 70-18-8 |
| Molecular formula | C10H17N3O6S |
| Molecular weight | 307.3 g/mol |
| Sequence | γ-Glu-Cys-Gly (GSH) |
| Published batch / lot | IP-GLUT1500-001 |
| Reported purity | 99.277% (RP-HPLC) |
| Measured content | 1629.23 mg/vial |
| Identity status | LC-MS identity result not published |
| Tested by | Janoshik Analytical (CZ) |
| Report date | 2026-08-24 |
| Storage | Lyophilised: −20 °C, protect from light |
| Certificate of analysis | Published for lot IP-GLUT1500-001 — download it from this page, or request a copy |
| Intended use | In-vitro laboratory research only |
Glutathione 1500mg: UK laboratory supply
This is a 1500mg vial of reduced L-glutathione, also known as GSH, supplied as lyophilised research material. The labelled quantity is 1.5g per vial; compare suppliers using the same mass and supplied form. Review the available batch record and any dispatch delay before ordering. This UK listing is for laboratory research material.
What does the research on Glutathione investigate?
Glutathione is a tripeptide of glutamate, cysteine and glycine, and its structure contains one feature that separates it from almost every other peptide here: the bond between glutamate and cysteine runs through the glutamate side chain rather than its backbone. That gamma linkage is unusual, and it is why the molecule resists the peptidases that would take apart an ordinary peptide of the same length - enzymes that cut the standard backbone bond do not recognise it. The other defining feature is the cysteine thiol. That thiol is the whole reason glutathione matters in redox research, and it is also its principal liability, because two glutathione molecules oxidise readily to form a disulfide-linked dimer. The reduced and oxidised forms are different molecules with different masses and different retention, so the ratio between them is a genuine analytical question rather than an impurity count. This page describes the material and its documentation only.
Who can buy Glutathione?
Glutathione is supplied strictly as a research chemical for in-vitro laboratory research. Products are sold exclusively to qualified researchers and licensed laboratories.
At checkout the buyer confirms that they are 18 or over, are buying in the course of research, and are responsible for handling, storing and disposing of the material in line with their laboratory's procedures. Glutathione is not for human or veterinary use.
We only answer questions about specifications, documentation and orders.
How are identity and quality assured?
Each released lot is tested and the result is published, rather than the material being described as high purity on the strength of a supplier's word. Purity is measured by reversed-phase HPLC at an independent laboratory. The laboratory used for every lot published so far is Janoshik Analytical, in the Czech Republic, and the result is stated alongside the measured content against label so the two can be read together.
The report carries the lot number printed on the vial, which is the part that matters. A certificate showing a result without a lot number cannot be tied to the vial in front of you, and a certificate for a different lot tells you nothing about yours. Matching the printed number on the label to the number on the report is a five second check and it is the whole point of publishing both.
Identity confirmation by mass spectrometry is a separate test and is ordered as an add-on, so the figures published here come from RP-HPLC purity testing unless a report says otherwise. Where no report is published for a listing yet, the documentation held for the lot being shipped can be requested before you order. We would rather send you what exists than let you assume a certificate is available when it is not.
Synthesis and supply
Peptide material is built by solid-phase synthesis, purified by preparative HPLC, then lyophilised. Lyophilisation freezes the solution and removes the solvent under vacuum, which is why the vial arrives holding a cake or powder rather than a liquid and why a solvent has to be added before the material can be worked with. Removing water also removes the main route by which a peptide degrades in storage, which is the reason the format is used.
Sequence length and modification are what make batches differ in difficulty. Every coupling step is an opportunity for a truncated or deleted by-product, and a heavily modified or long chain presents more of them, which is why the purity trace rather than the headline figure is what a certificate is read for. Vials are filled and labelled with the lot number, and the lot number is what the report and the verification lookup resolve against.
Because the bond is through the side chain rather than the backbone, this is not a sequence that ordinary solid-phase assembly produces without a deliberate route to the gamma linkage - a detail worth knowing when a batch is presented as glutathione rather than as the more easily made alpha-linked isomer.
External resources for researchers
These are the public reference sources we use when checking the identity of Glutathione, and the ones worth going to before relying on anything stated on a product page, including this one.
- PubChem — Compound records, computed properties, depositor-supplied identity data.
- CAS Common Chemistry — CAS Registry lookups where a registry number is known.
- ChEBI — Curated chemical ontology entries with cross-references.
- Europe PMC — Primary literature search by compound name, sequence or registry number.
- Certificate hub — Reports published for the lots released so far.
Frequently asked questions
How are GSH and GSSG distinguished on a certificate?
GSH is reduced glutathione, the monomer with a free cysteine thiol. GSSG is the oxidised dimer, two molecules joined by a disulfide bridge at roughly twice the mass. They are separate substances with separate registry numbers, and a purity figure is only interpretable once the certificate states which was measured.
Why is the glutamate linkage described as gamma?
The amide bond runs from the side-chain carboxyl of glutamate to the amino group of cysteine, not from the alpha-carboxyl as in a normal peptide bond. Standard peptidases do not recognise that linkage. It is a defining structural feature of the molecule rather than a modification made to it.
What makes the dry solid the stable form?
The free thiol oxidises readily in solution, and trace metal ions accelerate it. As a sealed, dry, frozen solid that route is largely closed off. Solutions of the reduced form are normally prepared for the work in hand rather than held.
Is Glutathione supplied for human or veterinary use?
No. Glutathione is supplied as a lyophilised powder in a sealed vial and is supplied strictly as a research chemical for in-vitro laboratory research. Products are sold exclusively to qualified researchers and licensed laboratories, and buyers confirm they are 18 or over and purchasing in the course of research. We only answer questions about specifications, documentation and orders.
How is the purity figure measured, and what does it actually tell me?
Purity is measured by reversed-phase HPLC at an independent laboratory, and the result is published with the method conditions rather than as a bare percentage. The figure is the proportion of the UV-absorbing material in the chromatogram that elutes as the target peak. It describes the sample as analysed; it is not a statement about what the material is for. A high figure alongside a clean chromatogram is the useful combination, which is why the report is worth reading rather than the headline number alone.
What documentation comes with a batch?
Each released lot carries a number printed on the vial label and a report stating purity by RP-HPLC, measured content against label, and the testing laboratory. Reports published so far are listed on this page and collected on the certificate hub, and each carries a lot number that can be checked against the vial in front of you. Where a report is not yet published for a listing, ask before ordering and we will send the documentation that exists for the lot being shipped.
How should Glutathione be stored?
In the form supplied, as a lyophilised powder, the material is stable kept cold, dry and dark. For powder, that means a freezer at around minus 20 degrees Celsius, desiccated, with the vial sealed and shielded from light, which is how it should stay until you are ready to work with it. Bringing a vial to room temperature before opening avoids condensation on the contents. Once in solution the material is less stable than the powder and should be kept cold and used within a short working window. Choosing a solvent and storage conditions for your own work is your call, not ours.
Do I need bacteriostatic water to prepare it?
A lyophilised powder needs a solvent added before it can be worked with. Bacteriostatic water, which is water with 0.9% benzyl alcohol, is the common choice because the preservative extends the working life of the solution once the vial has been opened, and we supply it in 3ml and 10ml vials. It is not the only option: where a method cannot tolerate benzyl alcohol, use the solvent the method specifies. The choice affects the sample, so it belongs to the researcher.
How and when is an order shipped?
Orders are dispatched from the United Kingdom. An order placed before 4pm on a working day is collected the same day; weekends and bank holidays roll forward to the next working day. Delivery is tracked, and shipping is free on UK orders over 30 pounds, with tracked 48 hour service at 3.65 pounds below that. Tracking is sent when the parcel is collected, so the first scan is usually visible the same evening.
Why does the gamma linkage matter?
Because it is not the bond a peptide would normally have. In an ordinary peptide the glutamate would join through its backbone, and the resulting molecule - alpha-glutamyl-cysteine-glycine - is a different compound with different chemistry. The gamma linkage is what makes glutathione recognisable to the enzymes that use it and resistant to those that would destroy it. It also means a synthesis route designed for standard peptides will not produce the right molecule.
What happens when glutathione oxidises?
Two molecules join through their cysteine thiols to form a disulfide-linked dimer, with the loss of two hydrogen atoms. The dimer has roughly twice the mass of the monomer and different retention behaviour. This is not a trace impurity: it is a conversion between two distinct redox states, and the ratio between them is a meaningful property of the material rather than a defect. Which state predominates depends on storage and on the conditions it is dissolved in.
How is the thiol content measured?
The classical approach uses a reagent that reacts specifically with free thiols and produces a coloured product, which is then quantified by absorbance. The result gives the proportion of the material still in the reduced form. Modern methods may use HPLC or mass spectrometry to separate the two states directly instead. Either way, a purity figure quoted without saying which redox state it refers to is incomplete.
Why is the vial filled to 1500mg?
Because glutathione is small. At 307.3 g/mol it is one of the lightest materials in this catalogue, so the same molar quantity that would be a few milligrams of a kilodalton-scale peptide weighs several grams here. The fill size reflects that difference rather than a different quantity of material in molar terms, and any calculation should be done from the molecular weight rather than the weight on the label.
Documentation & batch verification
The current released lot is IP-GLUT1500-001, tested 2026-08-24 by Janoshik Analytical (CZ): RP-HPLC purity 99.277% (RP-HPLC), measured content 1629.23 mg/vial, identity Purity confirmed (RP-HPLC). The full report for this lot is published and can be checked online — verify this batch. See the full record for lot IP-GLUT1500-001 or all published certificates of analysis.
Published batch records show the laboratory, report date, purity and measured content where reported. Check the certificate for the exact lot: an HPLC purity result does not establish LC-MS identity, sterility or suitability for human or animal use. Review the published batch record before ordering.
Order Glutathione 1500mg online — UK dispatch · Request an invoice · Verify a batch
Research use only. Not for human or animal consumption.