Redox cofactors are the molecules that carry reducing equivalents through cellular metabolism, and they double as substrates for entire enzyme families. Pyridine…
Read the full description and all 3 compounds →Glutathione New
Endogenous tripeptide (γ-Glu-Cys-Gly) and principal intracellular thiol redox buffer. Studied in vitro for redox-cycling assays and as a glutathione-S-transferase substrate.
Also searched as GSH · reduced glutathione · L-glutathione
At a glance
Glutathione is endogenous tripeptide · intracellular thiol redox buffer.
- Supplied as
- Lyophilized (freeze-dried) powder in a sealed vial
- Vial sizes
- 1500 mg
- Purity
- HPLC-verified, 99% or higher
- Certificate of analysis
- Published per lot at kinotype.shop/coa
- Ships
- From Texas to all 50 US states
- Intended use
- Laboratory research only. Not for human or veterinary use.
Chemical data
Handling & verification
Glutathione (GSH) is the endogenous tripeptide γ-Glu-Cys-Gly and the principal intracellular thiol redox buffer. It is supplied in reduced form as a reference compound for in vitro redox and oxidative-stress work, and ships as a white lyophilized powder, HPLC-verified at ≥99% purity.
Presentation and storage
Supplied lyophilized in a sealed vial. Store the sealed vial at −20 °C for long-term storage; refrigeration at 2–8 °C is adequate over shorter periods. Keep away from light and moisture.
Allow the vial to reach room temperature before opening, so atmospheric moisture does not condense onto the cake. The free cysteine thiol oxidises readily to the disulphide dimer (GSSG) on exposure to air and moisture, so keep the vial tightly sealed and reconstitute shortly before use.
Reconstitution
Reconstitute with bacteriostatic water. Direct the stream down the inside wall of the vial rather than onto the cake, then let it stand and swirl gently — do not shake, as agitation can denature the peptide.
- 1500 mg vial in 10 mL diluent gives a 150 mg/mL stock
- 1500 mg vial in 15 mL diluent gives a 100 mg/mL stock
- 1500 mg vial in 30 mL diluent gives a 50 mg/mL stock
Once reconstituted, store at 2–8 °C and protect from light. Avoid repeated freeze-thaw cycles — aliquot the stock if it will be drawn on more than a few times. Our reconstitution calculator works out any other combination.
Verification
Every lot is assayed by HPLC and released at ≥99% purity, and a per-lot certificate of analysis is available stating the batch number, the assay method and the measured purity. If you would like the certificate for the batch currently shipping before ordering, ask and we will send it.
Common questions
Does Glutathione come with a certificate of analysis?
Yes. Every lot of Glutathione ships with its own certificate of analysis showing HPLC purity, and the current certificate is published on our COA page before you buy — you do not have to order first or email anyone to see it.
What purity is Glutathione?
HPLC-verified at 99% or higher. The certificate for each lot states the measured figure, the detection wavelength and the method used, so the number can be checked rather than taken on trust.
How is Glutathione supplied and where does it ship?
It is supplied as lyophilized (freeze-dried) powder in a sealed vial, protected against light and impact. Full US shipping, operating from Texas. Delivery estimates are provided by the carrier at checkout.
How should Glutathione be stored?
Keep the lyophilized vial cold and dark — refrigerated for near-term use, frozen for longer storage. Once reconstituted it belongs in the refrigerator and its usable life is measured in weeks rather than months. Aliquot rather than thawing the same vial repeatedly, because freeze-thaw cycles cost more stability than most people expect.
How do I reconstitute Glutathione?
Add bacteriostatic water slowly down the inner wall of the vial so the stream does not strike the powder directly, then let it dissolve on its own — swirl gently if needed, never shake. The volume you add sets the concentration, so decide the concentration first and work backwards. Our free reconstitution calculator does that arithmetic and gives the volume to draw per aliquot.
Is Glutathione for human use?
No. Glutathione is supplied strictly as a reference material for laboratory research use only. It is not a drug, food, cosmetic or medical device, it is not for human or veterinary consumption, and it is not intended to diagnose, treat, cure or prevent any disease. We do not provide dosing guidance or protocols of any kind.
See the certificate · Reconstitution calculator · All questions
Handling guides
Other compounds
For laboratory and research use only. Not for human or veterinary use, diagnosis, or consumption. Products are sold to qualified researchers and are not drugs, foods, or cosmetics.