Buy Epithalon Peptide: 9.64 mg of Powder, 24.7 Micromoles

One listing, one presentation. Everything a certificate can state about the object is in the table.

Two of those rows are worth more than the rest when a listing is being judged. The batch number ties a specific certificate to a specific bottle, and the closure colours let a report be matched to the vial in front of you rather than to a product page. The Kovera report also carries an access code, 5GSZLSD, against a verification address at koveralabs.com, which turns the PDF from an image into something checkable at the laboratory that issued it.

Note the spelling. FDA and PubChem write the molecule as Epitalon. The vendor market, including this listing, writes Epithalon, and Epithalone and Epithalamin tetrapeptide both appear as synonyms. They are the same compound with the same CAS number, and a listing using one spelling and a certificate using the other is not a mismatch.

A 10 mg label is a commitment to a range rather than to a number. The specification written on this certificate is 10 mg plus or minus 10 percent, so any fill from 9.00 to 11.00 mg passes, and batch 15-05260628 came in at 9.64 mg.

The shortfall is 0.36 mg, which is 3.6 percent and about 90 cents of material at the discounted rate. It passes, and it is still under the number printed on the cap, which is unusual enough to say plainly: most published fill weights on this catalogue run over. The same vendor's Selank lot 29-01260229 assayed at 12.29 mg and its Semax batch at 11.23 mg, both against 10 mg labels. Our Selank listing breakdown covers what a published quantity field is worth on a product page.

What the figure changes for a buyer is not the price so much as the concentration. Any number written on a cap after reconstitution is derived from the mass believed to be in the vial, so a label-derived concentration on this batch is 3.6 percent optimistic before anything else has gone wrong. The correction is to divide the certified net content by the diluent volume rather than the label figure, which is arithmetic rather than chemistry.

Cost per milligram compares mass. Epithalon is roughly half the mass of the peptides sitting next to it, so mass and molecule count rank the catalogue differently.

Per milligram Epithalon at $2.50 sits between Selank at $2.38 and Semax at $3.00, which is the ordering every price comparison will show. Per micromole it is the cheapest of the three by a wide margin, because a molecule weighing 390.35 packs about 1.93 times as many copies into a milligram as one weighing 751.9. On the assayed 9.64 mg the figure moves to $1.01 per micromole and the ranking does not change. Our Semax price breakdown runs the same molar arithmetic from the heavy end.

None of which makes one vial better value, and the trap is worth naming. Molarity is a count, not a potency: two peptides with different targets are not interchangeable at any exchange rate, and a cheap micromole of one compound buys nothing that a dear micromole of another does. The reason to run the conversion at all is that a four residue peptide and a seven residue peptide priced identically per milligram are not priced identically per molecule, and only one of those two facts is printed on a storefront.

Lyophilisation removes water under vacuum at low temperature and leaves a dry cake in a sealed vial. Water is the mobile phase most degradation chemistry needs, so taking it out slows hydrolysis, oxidation and aggregation to the point where a properly dried peptide held at minus 20 degrees Celsius keeps for 18 to 36 months rather than weeks. That is why the vendor sells powder rather than a ready mixed solution, and it is also why a listing offering a prefilled Epithalon syringe is describing a different and much shorter shelf life.

Aggregation is the word to notice, because it is the same word FDA uses. The agency writes that compounded drugs containing epitalon may pose risk for immunogenicity for certain routes of administration due to the potential for aggregation and peptide-related impurities. Aggregates form far more readily in solution than in a dry cake, so the physical format of the product is doing part of the work that the certificate measures, and the two are worth reading together rather than separately.

Once water goes in, the clock starts. Reconstituted peptides held at 2 to 8 degrees Celsius typically retain more than 90 percent of their potency for about 28 days, which is also roughly how long the preservative in bacteriostatic water stays effective. That window, not the price, is what determines whether a 10 mg vial is the right size to buy, and our peptide storage guide covers the temperature and shelf life side in detail. These are general laboratory handling figures for research material, not instructions.

Kovera Labs report KVR-2026-A36FF4, certified 23 May 2026, covers five things and stops.

• Purity 99.312% against a specification of greater than 98%, measured by reversed phase HPLC on a C18 column with diode array detection at 214 nm.
• Net content 9.64 mg against 10 mg plus or minus 10 percent.
• Identity confirmed by LC-MS, reported as Epithalon.
• Endotoxin safety screen marked PASS against a limit of 0.5 EU/mL. No measured value is printed and no method is named, so the report does not say whether the compendial bacterial endotoxins test at USP Chapter 85 was run.
• Microbial sterility screen returning no growth, and heavy metals negative for arsenic, cadmium, lead and mercury.

That is a fuller scope than most research listings publish, and it still stops well short of what the compound would need to be anything other than laboratory material. Epitalon was nominated as a bulk drug substance for compounding, placed in category 2 under the interim policies, then withdrawn, and it appears in none of the three current 503A category lists as updated on 14 May 2026. It has no FDA approval for any indication. A sterility screen showing no growth is a real result on one batch and not a statement that the substance is safe in a human, which is precisely the question FDA says it lacks the information to answer.

The compound is also marketed on telomere and longevity claims drawn largely from one research group's work in cell culture, rodents and fruit flies, with limited independent replication. Those claims are reported here rather than adopted, and nothing in that literature establishes an effect on human lifespan.