Glutathione 600mg Vial

Description

The glutathione 600mg vial is a laboratory reference material and nothing else. The compound is glutathione in the free thiol form, the gamma-Glu-Cys-Gly tripeptide. The fill weight is 600 mg of net peptide content. Appearance is white to off-white, sealed under vacuum, with the lot number printed on the label. It is not a food, not a drug, and not for human or veterinary consumption.

The same material is catalogued elsewhere as GSH. The free thiol form is the reduced one, and it oxidises on exposure to air, which is the reason the vial is sealed under vacuum and the reason the assay date on the certificate is worth reading. The label on the glutathione 600mg vial carries the compound, the fill weight and the lot number, and that is the extent of it.

The glutathione 600mg vial, specified

What follows is the specification for the glutathione 600mg vial, with the measured figures on the lot certificate.

Freeze dried powder, fill weight and price per milligram

Freeze drying is how a peptide reaches you stable at ambient temperature. The solution is frozen solid, then the ice is pulled off under vacuum instead of being melted, so the water never passes through a liquid phase on the way out. What is left behind is a porous cake. In the vial it may sit as a flat disc, a loose dust, or a thin film part way up the glass. None of those appearances says anything about the contents. Fill weight and the assay figure do. Nothing about the glutathione 600mg vial is sold by volume.

The arithmetic

Milligram content is the unit the glutathione 600mg vial is sold in, because it is the only figure that makes two listings comparable. That is around $0.15 per milligram on the price as listed. Milligram content is the unit the whole comparison should run on, and anything else, a per vial price or a per order price, moves with packaging rather than with content. Compare the glutathione 600mg vial on that basis rather than on the price of the glass. The case is made at greater length in why price per milligram beats the price on the bottle.

The certificate of analysis for the glutathione 600mg vial

Each lot has its own certificate and the document is tied to the lot number printed on the vial label. On it you will find the analysis date, the HPLC purity figure together with the chromatogram, the mass spectrometry identity comparison, the Karl Fischer water result, and the issuing laboratory. Those seven items are the specification. Everything else on a vendor page is commentary. The certificate issued with the glutathione 600mg vial is specific to the lot and not to the product line.

Testing is contracted out to a laboratory with no ownership tie to the seller. It is a weaker guarantee than people sometimes assume and a stronger one than in house assay, for the plain reason that the people producing the number are not the people selling the vial. Stock is withdrawn from sale where the certificate for the glutathione 600mg vial does not support the figures here. See how to read a certificate of analysis and why we publish the batch that failed.

Purity, identity and moisture are three different measurements

Trifluoroacetic acid is used in peptide purification and some of it leaves with the product as a counter ion. It is heavier than nothing, which means a lot reported by gross weight contains less sequence than the label implies. Net peptide content corrects for that, and so do the figures used here. The same methods are run on the glutathione 600mg vial as on every other lot on this shelf, and formulae and expected masses for compounds of this class can be checked through PubMed.

Why the name is inconsistent, and how to store the glutathione 600mg vial

Abbreviations here are inherited rather than designed. They come from the groups that first made a compound, from ingredient registers, from development programmes and from vendors, so two listings can look different and be identical. Where an abbreviation expands into a statement about what a compound does, the abbreviation is what appears here, in the title, the web address, the image description and the text alike. The catalogue name carried by the glutathione 600mg vial is the one the trade uses, and a trade name is not an identifier.

Keep the vial sealed, cold and dark. Lyophilized material of this class is normally held at 2 to 8 degrees Celsius for short periods and at minus 20 degrees Celsius or below for longer ones, and the window for the lot is on this listing. Keep the certificate with the vial, since the lot number is the only thing joining the two.

Research use only, stated plainly

Research use only, not for human or veterinary consumption. That sentence is a description of what is being sold and not a disclaimer appended to something else. There is accordingly no dose, no cycle, no route of administration and no reconstitution guidance anywhere on this page, and the omission is the policy rather than a gap in the copy. No part of this page describes a use for this material in a person or an animal. Bacteriostatic water, sterile diluents and syringes are stocked separately rather than sold as a set with the vial.

The limits of that sentence need stating. A research use only line describes what is sold, it is not a shield, and the enforcement record shows whole product pages being read rather than disclaimers alone. See research use only is not a legal strategy.

Every figure quoted here comes from the document linked above, and older certificates are kept rather than retired. That is the whole of the claim being made. This item sits on the longevity shelf, inside the research peptide catalogue, and every certificate we hold is on the lab results page.