Is a Certificate of Analysis available for Glutathione?

Yes. Batches are independently verified by reverse-phase HPLC. The Certificate of Analysis is batch-matched to the vial label and published in the public COA library at alphex.co.uk/pages/coa, where you can read it before you order.

How should it be stored on arrival?

Lyophilised peptides ship vacuum-sealed. Refrigerate at 2 to 8 C for short-term storage and freeze at minus 20 C for long-term storage. Keep light-sensitive compounds in the original vial.

What is it supplied for?

Supplied exclusively for laboratory and in-vitro research purposes by qualified researchers. Not authorised for human or veterinary use.

Tripeptide

Glutathione

Q: How is it shipped and how quickly?

Order by 2pm Monday to Friday for same-day dispatch from UK domestic stock. Sent with Royal Mail Tracked 24, which aims for the next working day, in vacuum-sealed, discreet packaging. 3.99 GBP under 60 GBP, free over 60 GBP after any discount.

Reviews from UK researchers

£39.99£49.99at launch

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This compound is in testing. It is listed here so you can be told the day it clears, in signup order. Nothing is charged now.

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Certificate pending

Testing pending

We do not publish a purity figure for a batch we have not had tested. The certificate goes into the library the moment this compound is back in stock and verified.

Browse the certificate library

Every certificate Alphex holds is published in full, including a batch we rejected. All testing is carried out by Vanguard Laboratory, Olympia WA.

Certificate of Analysis

Every batch is independently verified by reverse-phase HPLC to 99+% purity by Vanguard Laboratory. The certificate is batch-matched to the vial label and published in our COA library, so you can read it before you order rather than asking for it.

Vanguard is accredited to ISO/IEC 17025:2017 by A2LA under certificate scope 6377.01. The chromatographic purity result is not represented as an accredited-scope test.

Shipping & delivery

Order by 2pm Mon-Fri for same-day dispatch. Sent with Royal Mail Tracked 24, which aims for the next working day. Vacuum-sealed, discreet packaging. £3.99 under £60, free over £60 after any discount.

Free delivery protection is included on every order. If your parcel is lost in transit or a vial arrives damaged, we replace it at no cost. See shipping and delivery.

Storage & handling

Lyophilised peptides ship vacuum-sealed. Refrigerate (2-8°C) on arrival for short-term storage, freeze (-20°C) for long-term.

Research use only

Supplied exclusively for laboratory and research purposes. Not authorised for human or veterinary use.

GLUTATHIONE - Research Peptide

For research purposes only. This product is supplied exclusively for scientific laboratory research and analytical applications. It is not intended for human or animal use, and must not be misused in any way that contravenes regulations or applicable laws.

Product Overview Glutathione is the tripeptide gamma-L-glutamyl-L-cysteinyl-glycine, supplied in the reduced (GSH) form. The gamma linkage between the glutamate side chain and cysteine is what makes it resistant to standard peptidase cleavage. It is used as a laboratory reagent in redox and thiol chemistry work.

Technical Specifications:

Chemical Name: L-Glutathione reduced (gamma-L-glutamyl-L-cysteinyl-glycine)
Molecular Formula: C10H17N3O6S
Molecular Weight: 307.32 g/mol
CAS Number: 70-18-8
Sequence: gamma-Glu-Cys-Gly (3 residues)
Purity: ≥99.0% specification. Certificate published in the COA library before this batch is listed.
Appearance: White to off-white lyophilized powder.

Storage & Handling: Store lyophilized product at -20°C, sealed and protected from air. The free thiol oxidises readily to the disulphide (GSSG) on exposure to air or at elevated pH, so reconstitute immediately before use, hold at 4°C and do not store the solution for extended periods.

Glutathione specification

Form	Lyophilised powder, vacuum-sealed glass vial
Purity and identity	99+% by RP-HPLC (220 nm)
Available sizes	750mg
Storage	Sealed vial: -20 C long term, 2-8 C short term. Protect from light and moisture.
Documentation	Batch-matched Certificate of Analysis with the HPLC chromatogram, the measured purity and the issuing laboratory named. Published in the public COA library, searchable by the batch code printed on the vial label.
Origin and dispatch	UK domestic stock. Same-day dispatch before 2pm Mon-Fri, sent with Royal Mail Tracked 24.
Intended use	Laboratory and in-vitro research only. Not authorised for human or veterinary use.

Values are typical for the compound. The Certificate of Analysis for the shipped batch is the authoritative record for purity, identity and net content.