KPV: Three Amino Acids, and the Reason Researchers Keep Coming Back to Them
KPV is the smallest compound in this catalogue that anyone studies seriously — a three-residue fragment of alpha-MSH that retains anti-inflammatory activity without the pigmentation effects of the parent hormone. Here is why that matters, and how to buy it without guessing.
- KPV is a tripeptide — lysine-proline-valine — corresponding to the C-terminal fragment of alpha-melanocyte-stimulating hormone.
- The fragment retains anti-inflammatory activity associated with the parent hormone while lacking the melanocortin-receptor-driven pigmentation effects, which is precisely why it is studied separately.
- Research interest concentrates on gut and skin inflammation models, where its small size and stability are practical advantages.
- Its size makes it unusually stable and easy to work with compared with larger peptides in the same research space.
- Popular Peptides supplies KPV at greater than 99% purity, HPLC and LC-MS verified, with a batch-specific certificate of analysis.
- For in vitro laboratory research use only — not for human or veterinary consumption.
The smallest thing in the catalogue, and one of the most studied
KPV is three amino acids: lysine, proline, valine. That is the entire molecule. Next to a 39-residue compound it looks like a rounding error.
It is also the C-terminal fragment of alpha-melanocyte-stimulating hormone, and it is studied precisely because of what it does not carry with it.
Why researchers use the fragment instead of the whole hormone
Alpha-MSH has a broad activity profile. Some of it is of interest in inflammation research; some of it is pigmentation activity mediated through melanocortin receptors, which for most research questions is a confound rather than a feature.
KPV is the answer to that problem. The tripeptide retains anti-inflammatory activity associated with the parent hormone while lacking the pigmentation effects. For anyone trying to isolate one arm of alpha-MSH biology without dragging the rest along, that is the entire point of the compound.
Research attention has concentrated on **gut and skin inflammation models**. In both, the practical properties of a three-residue peptide matter as much as the pharmacology: small peptides are more stable, tolerate handling better, and behave more predictably in solution than large fragile ones.
KPV also appears as a component in our KGLOW blend alongside GHK-Cu, BPC-157 and TB-500, which is worth knowing if you are already working with that combination. Full molecular data — sequence, mass, CAS number — is in the reference library.
Buying it without guessing
A tripeptide is cheap to make, which sounds like good news and is actually the risk. Cheap synthesis attracts suppliers who do not test, because at this molecular size the shortcuts are easy and the customer usually cannot tell.
So the question is not what it costs. It is whether anyone measured what is in the vial.
- —**HPLC for purity, LC-MS for identity**, performed by an independent third-party lab rather than by the seller.
- —**Published-batch purity averaging above 99%** — the measured average across the batches we publish, not a marketing number.
- —**Enter your lot number** and read the certificate of analysis for the vial in your hand. Or read every published result before ordering.
And the operational part: **it ships from Vancouver, BC.** Typically 2 to 5 business days, tracked, insured, discreetly packaged, in Canadian dollars, free shipping over $300 CAD. Nothing crosses a border, so nothing gets held at one. Most research compounds bought in Canada arrive from overseas and carry that risk on every order.
Frequently asked questions
What is KPV?
KPV is a synthetic tripeptide composed of lysine, proline and valine, corresponding to the C-terminal fragment of alpha-melanocyte-stimulating hormone. It is supplied for in vitro laboratory research use only.
Why is KPV studied instead of alpha-MSH?
The tripeptide fragment retains anti-inflammatory activity associated with the parent hormone without the melanocortin-receptor-mediated pigmentation effects, which allows researchers to isolate one arm of alpha-MSH biology.
What research areas use KPV?
Research interest concentrates on gut and skin inflammation models. Its small size also makes it more stable and easier to handle than larger peptides studied in the same space.
What purity is your KPV?
Greater than 99%, verified by HPLC for purity and LC-MS for identity by an independent third-party laboratory, with a certificate of analysis retrievable by lot number on our verification page.
Where can I buy KPV in Canada?
Popular Peptides supplies KPV for laboratory research use, shipped domestically from Vancouver, BC with a third-party certificate of analysis verifiable by lot number. It is not sold for human or veterinary consumption.
KPV is supplied for in vitro laboratory research use only. It is not approved by Health Canada for therapeutic use and is not intended for human or veterinary consumption. 18+.
Every batch we sell is independently third-party tested, with the full Certificate of Analysis published and checkable by lot number.