Buy 2, save 5%Buy 3+, save 9%Buy 6+, save 15%Buy 10+, save 22%Free EU & Balkan shipping over €1503rd-party tested batchesTest results available through the libraryCzech Republic fulfillmentResearch use onlyBuy 2, save 5%Buy 3+, save 9%Buy 6+, save 15%Buy 10+, save 22%Free EU & Balkan shipping over €1503rd-party tested batchesTest results available through the libraryCzech Republic fulfillmentResearch use only
Lyophilized form helps protect peptide quality. Peptides are supplied as a dry powder, which may look like a compact "puck" or a lighter powder inside the vial.
Because the peptide is dry, it does not require refrigerated shipping during normal transit, including warm seasonal conditions. For longer storage, follow the storage guidance in the product description.
Appearance can vary. The stated peptide content is checked through third-party analysis.
Read more in the product description.
Solution not bundled
Peptides are delivered as lyophilized powder. This dry form helps preserve peptide quality during storage and transport and does not require refrigerated shipping during normal transit.
To prepare a solution, use a solvent such as Bacteriostatic water. It is sold separately, so add it only when you need it for peptide preparation.
Read more in the product description.
Signalling tripeptide
KPV
Low stock
KPV is the three-amino-acid Lys-Pro-Val fragment linked to alpha-MSH research. Published studies look at cell transport, cytokine signals, wound models, scar formation, and receptor-related questions.
MassQuantity
38,50 €38,50 €
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KPV · 1 vial138,50 €38,50 €
KPV
38,50 €
KPV tripeptide fragment for melanocortin, barrier, and immune-signalling studies.
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Research overview
KPV
KPV is a short, defined fragment, not the complete alpha-MSH peptide. This difference matters when transport, receptor, and stability studies are compared.
Studies cover intestinal cell models, inflammation markers, wound-related tests, and alpha-MSH comparisons. They identify research endpoints but do not promise a result for this material.
Cell transport and signalling
Studies use epithelial-cell systems to measure KPV uptake, transporter activity, NF-kB-related signals, and cytokines. These are controlled laboratory questions.
Other work compares KPV with alpha-MSH pathways, where sequence length and receptor context matter.
Tissue-model endpoints
Published work also uses wound and scar-formation models. Cell movement, matrix, and inflammation measurements apply only to the original model.
Compound information
Specifications
Molecular profile
Sequence
Lys-Pro-Val
Molecular mass
342.43 g/mol
CAS number
67727-97-3
Molecular formula
C16H30N4O4
Material record
Physical appearance
White to off-white lyophilized powder
Solubility
Soluble in bacteriostatic water and suitable aqueous laboratory solvents.
Product note
Alpha-MSH tripeptide fragment; supplied strictly for research use only.
Laboratory care
Handling
Peptides in transport
Peptides in lyophilized form are supplied in glass vials by standard shipping methods and do not require refrigeration. Short-term temperature fluctuations during transport will not reduce their quality and efficacy. Even at high summer temperatures, the peptides in lyophilized form are stable for several weeks.
Storage of lyophilized peptides
Lyophilized peptides should be stored in a dry place, protected from light and moisture. The following storage conditions are generally recommended:
Room temperature (15–25 °C): Up to 3 months
Refrigerated (2–8 °C): Up to 6 months
Frozen (-20 °C or below): 3–5 years (recommended for long-term storage)
Allow the vial to reach room temperature after taking it out of the refrigerator or freezer.
Storage of reconstituted peptides
Once reconstituted, peptide solutions are generally less stable than their lyophilized form and should be stored under refrigerated conditions whenever possible.
The following storage conditions are generally recommended:
Room temperature (15–25 °C): Avoid prolonged storage
Refrigerated (2–8 °C): Typically 4–8 weeks
Frozen (-20 °C or below): Up to 3–4 months
To preserve peptide integrity, avoid repeated freeze–thaw cycles, as these may accelerate peptide degradation.
Important: Most manufacturers recommend discarding reconstituted peptides within 4 weeks when stored at 2–8 °C. This recommendation is intentionally conservative and may not reflect the actual chemical stability of every peptide. In our own stability studies, many peptides reconstituted in bacteriostatic water showed no detectable degradation after 12 weeks of refrigerated storage. As peptide stability is highly sequence- and formulation-dependent, this result should not be extrapolated to all peptides without supporting stability data.
Analytical documentation
Latest test results
Latest published result
Liquilabs s.r.o.Signed Certificate of Analysis · 10mg
> 99.8%Purity by HPLC
Batch number
2027602
Tested
2026-09-08
Recorded QC panel
AssayPeptide Screening 0.1% TFA
10.48 mg (± 0.05 mg)
PurityPeptide Screening 0.1% TFA
> 99.8%
Identity (FTIR)Peptide Screening 0.1% TFA
995 (± 5)
Identity (RT)Retention time
0.984 (± 0.005)
Bacterial endotoxinUSP 85 / Eur. Ph. 2.6.14
0.157 EU/mg
These are the latest published results for this strength. The batch number is printed on each vial. Your supplied batch is confirmed against the matching published record when your order is allocated.
T. Brzoska, T. A. Luger, C. Maaser, C. Abels, and M. Böhm · 2008
Alpha-melanocyte-stimulating hormone and related tripeptides: biochemistry, antiinflammatory and protective effects in vitro and in vivo, and future perspectives for the treatment of immune-mediated inflammatory diseases
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