Epithalon 25mg Vial

Description

Listed as a laboratory reference material, the Epithalon 25mg vial is the Ala-Glu-Asp-Gly synthetic tetrapeptide, freeze dried and sealed under vacuum. The fill weight is 25 mg of net peptide content. The cake is white to off-white. Not for human or veterinary consumption, and neither a food nor a drug.

The same material is catalogued elsewhere as Epitalon. Twenty-five milligrams is the fill the Khavinson range is usually catalogued in, and the 10 mg fill is listed separately under the other spelling of the name. It belongs to the short peptide range catalogued under the Khavinson names, where the name is a supplier convention rather than a description of anything. The label on the Epithalon 25mg vial carries the compound, the fill weight and the lot number, and that is the extent of it.

Contents of the Epithalon 25mg vial

What follows is the specification for the Epithalon 25mg vial, with the measured figures on the lot certificate.

Lyophilized powder, and the price per milligram of the Epithalon 25mg vial

The powder is lyophilized, which means the water was removed by sublimation after the solution had been frozen. Peptides tolerate that far better than they tolerate heat. The product is a dry solid holding very little moisture, which is the condition in which an amide bond is least likely to hydrolyse. Cake appearance varies between lots for reasons that have nothing to do with content, so the volume occupied in the glass is not a measurement. Nothing about the Epithalon 25mg vial is sold by volume.

The arithmetic

Milligram content is the unit the Epithalon 25mg vial is sold in, because it is the only figure that makes two listings comparable. The per milligram figure is approximately $4.45 at the current price. It is the honest basis for comparison because it cancels out vial size. A vendor quoting only a bottle price is asking to be compared on the wrong axis. Compare the Epithalon 25mg 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.

Reading the certificate for this lot

The certificate is the product description that actually counts. It names the compound and the lot, gives the date the work was done, prints the purity percentage and the trace it was integrated from, records the measured mass beside the expected mass, states the water content, and identifies the laboratory. If you only ever read one thing on this page, read that document. The certificate issued with the Epithalon 25mg vial is specific to the lot and not to the product line.

The assay is performed by a contract laboratory unconnected to this business. Any lot that comes back below its stated milligram content is pulled from sale, and the certificate stays published on the results page with everything else instead of quietly disappearing. Stock is withdrawn from sale where the certificate for the Epithalon 25mg vial does not support the figures here. See how to read a certificate of analysis and why we publish the batch that failed.

What the methods actually measure

The difference between gross contents and net peptide is not a rounding error. Counter ion and moisture together can account for a meaningful share of what a balance reports. Specifying which basis is in use is therefore part of specifying the product at all, and the figure used on this listing is the net one. The same methods are run on the Epithalon 25mg vial as on every other lot on this shelf, and formulae and expected masses for compounds of this class can be checked through PubChem at the NCBI.

Why the name is inconsistent, and how to store the Epithalon 25mg vial

One compound, several names, is the normal condition here. Internal codes outlive the laboratories that issued them, INCI numbers get reassigned, and nothing in a product title resolves any of it. Several abbreviations on this shelf unpack into descriptions of activity. They are not unpacked here, and where a compound cannot be described without that, only its measurable properties are described. The catalogue name carried by the Epithalon 25mg vial is the one the trade uses, and a trade name is not an identifier.

Storage is the usual practice for dry peptide material: sealed, refrigerated at 2 to 8 degrees Celsius over short intervals, frozen at minus 20 degrees Celsius or colder over long ones. Avoid moving it in and out of the cold repeatedly, because moisture condenses on cold glass. Keep the certificate with the vial, since the lot number is the only thing joining the two.

Research use only, stated plainly

Offered for laboratory research use by qualified purchasers and for nothing else. Not for human or veterinary consumption, not a food, not a drug. No physiological description is published, no dosing figure, no administration protocol and no reconstitution procedure, and requests for them are declined rather than answered quietly. 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.

A research use only statement is not a legal strategy and is not treated as one here. Warning letters in this area turned on what the rest of the page said, not on whether a disclaimer was present. See research use only is not a legal strategy.

The certificate travels with the lot number and is linked above. Nothing in this description goes further than that document goes. This item sits on the longevity shelf, inside the research peptide catalogue, and every certificate we hold is on the lab results page.