KPVlaboratory reference kit

KPV is the three-residue C-terminal sequence of α-melanocyte-stimulating hormone (α-MSH). The full α-MSH peptide carries broad neuro-hormonal activity, but the KPV fragment retains the immunomodulatory tail without engaging melanocortin receptors that drive pigmentation. Published preclinical research has explored KPV in inflammatory bowel models, dermatological inflammation panels and mucosal-immunity assays.

Its short sequence makes KPV inexpensive to synthesise and easy to dissolve, but the same short sequence means batch identity is best confirmed by mass spectrometry rather than HPLC alone — the molecule's small size means impurity peaks can co-elute on standard reverse-phase gradients.

Each KPV batch is independently tested before release. Mass spec is doubly important on short peptides because impurity peaks can hide under the main HPLC band.

Janoshik Analytical is the default verification partner. Per-batch reports are published on the lab reports page and traceable to the batch number printed on every vial cap.

Lyophilised KPV is supplied as a sterile white powder under inert atmosphere. Hold unopened vials at 2–8 °C and transfer to −20 °C only if reconstitution will not happen within 8–12 months. Reconstitute with bacteriostatic water for a two-month (60-day) in-use stability window under refrigeration; sterile water is acceptable for same-day work but not for multi-day storage.

KPV dissolves readily — solutions should be clear and colourless within seconds of gentle swirling. Cloudy reconstitution is the most common warning sign of handling error or undisclosed impurities. Most laboratories store working solutions at 1–5 mg/ml in single-use aliquots.

Researchers building inflammation-focused panels often include both KPV and BPC-157. The two molecules sit in distinct mechanistic lanes — KPV operates through the α-MSH immunomodulatory tail while BPC-157 is a 15-residue fragment of a gastric protective protein with a separate set of regenerative endpoints in preclinical work.

Stocking both from the same supplier keeps COA formatting, packaging and reconstitution protocols consistent across the panel and simplifies cross-experiment troubleshooting.

An honest KPV supplier publishes the per-batch third-party COA, names the testing laboratory, includes both HPLC and mass-spec data, and prints the batch number on the vial. Mass spec is non-negotiable on tripeptides — purity numbers from HPLC alone are not enough to confirm identity on a molecule this small.

Regena's consultations team can walk new buyers through the COA, the reconstitution maths and the storage plan before any order ships.