KPV

Note on the family it is filed under

Alpha-melanocyte-stimulating hormone is a thirteen-residue peptide and this is its last three. That places the compound in the same family as two others in this catalogue while separating it from both in a way the family name obscures.

Melanotan 2 and PT-141 are cyclic analogues built around the core melanocortin recognition sequence, and both are melanocortin receptor agonists in the ordinary sense. This compound carries none of the residues that drive receptor binding in those analogues, and the literature describing it concerns activity that does not depend on the classical melanocortin receptors. Grouping it under alpha-MSH because it shares a parent is accurate genealogy and misleading pharmacology. A melanocortin receptor readout is probably the wrong instrument here, and a design assuming the same mechanism as the cyclic analogues is testing an assumption rather than a hypothesis.

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The interactive verification record is shown below, followed by the same information reproduced as text on this page and the full certificate as a document. The record does not depend on the embed loading.

Certificate of analysis - lot KPV1012102025-08

Lot record

KPV1012102025-08

Results, this lot

Purity and content figures above are specific to lot KPV1012102025-08 and are not a specification carried across other lots. This certificate was issued on an earlier template carrying a narrower panel than several other listings in this catalogue. Each lot is tested individually and reports its own results.

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Panels differ between products and between lots. What follows is the scope of testing performed on this lot. Nothing is claimed unless it appears on the certificate for the lot supplied.

Where a parameter is material to intended laboratory work, purchasers should verify it independently or source material released against that specification.

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Most quality arguments in this category rest on the difficulty of assembling long chains. Three residues is not difficult to assemble, so the usual reassurances carry less weight here and the failure modes are different ones. This section sets out what the document above does and does not settle.

The mass is a single point rather than a series. At roughly 342 daltons the protonated ion sits near 343, in a region of the spectrum where solvent clusters, salt adducts and small-molecule contaminants also appear. A tripeptide is too small to carry multiple charges, so there is no ladder of independent ions that must all reconstruct to the same weight. On a peptide of two thousand daltons that cross-check is the strongest part of the identity argument. Here it is unavailable.

The chromatography is crowded. A short, polar, unremarkable tripeptide elutes early on a reversed-phase column, close to the void where unretained material comes off. Separation from anything else eluting there is correspondingly harder than for a molecule with more hydrophobic character holding it on the column.

None of that makes this material suspect. It means the certificate is doing less work here than the same certificate would on a larger molecule, which is a property of the analysis rather than of the sample. Anyone requiring certainty at this size should be considering amino acid analysis or a second orthogonal method rather than treating a purity percentage as the end of the question.

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Preparation conditions are the responsibility of the receiving laboratory. Verum provides no protocol, no preparation instruction, and no guidance on use.

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The published record on this tripeptide is genuinely small, and most of it is cell culture and rodent work spread across a couple of decades and several disciplines. We are not assembling a curated list from it, because a short bibliography selected by the seller from a thin literature is a shaped picture rather than an informative one, and on a compound with this little published work the selection would be doing more of the argument than the studies. Researchers should search it directly. The FDA briefing package prepared for the July 2026 advisory committee review is a reasonable starting point, since it surveys the evidence base without a commercial interest in the conclusion.

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By placing an order you confirm each of the following:

Confirmation is recorded at checkout against your order. Verum reserves the right to decline or cancel any order.

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Orders placed before the daily cutoff are dispatched the same day from our United States warehouse. Domestic orders typically arrive within two business days. A tracking reference is issued by email once the consignment leaves the facility. Each unit carries a scannable code linking to the certificate for its own lot.

Not for human or veterinary use. Not for use in diagnostic or therapeutic procedures. This product is a laboratory reagent. Nothing on this page constitutes medical advice, a recommendation for personal use, or a representation that this material is safe or effective for any purpose. No statement here has been evaluated by the U.S. Food and Drug Administration.