Search peptides — top sellers first
Search peptides — top sellers first
Search peptides — top sellers first
The pigment peptide that darkens skin without sunlight
$49/ 10mg vial
$24.50 per vial with Buy 1, Get 1 Free
Buy 1, Get 1 Free — add 2 to cart, applied automatically
In stock
Frequently bought together
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Certificate of analysis
We don't publish a brand-wide spec sheet and call it a “COA.” The certificate you receive references the actual lot number stamped on your vial — with the raw chromatograms attached.
Purity by HPLC-UV
99.81%
Contaminant screens
Freedom Diagnostics
Independent analytical lab
Certificate of Analysis
RESULT · PASS
Melanotan II 10mg
HPLC purity
99.81%
Pass · Meets spec
Tested
15 Jun 2026(3 months ago)
HPLC-UV + LC-MS
Analytical results
HPLC Chromatogram
Main peak 99.81% · other 0.19%
Alex JohnsonPrincipal Chemist
Authentichain · Verified 20×
The process
Four steps, every lot. The certificate is published before the vial ships.
Made in a controlled facility
Documented, repeatable steps for every batch.
Purity tested
An outside lab measures it and reports the exact number.
Identity confirmed
A second test proves it is what the label says.
Live
Freedom Diagnostics
99.81%
Purity by HPLC-UV
Report published
Signed, filed by lot number, and public before the vial ships.
Melanotan II is studied to act through the melanocortin receptor family, hitting several different receptors that control distinct body processes.
By switching on the MC1R receptor on skin pigment cells, the peptide is studied for its ability to ramp up melanin production.
It binds MC4R receptors in the brain, a route researchers link to how the body regulates hunger and energy balance in animal models.
Melanocortin signaling in the central nervous system is studied for its role in sexual-behavior responses seen in rodent research.
For research use only. Mechanisms described reflect published preclinical and clinical literature.
Anyone can show you one good report. Here is every batch of Melanotan II we have ever released, newest first, each with its own signed report. Nothing hidden, nothing cherry-picked.
Published findings on this compound, each linked to its source. Animal and lab results are context, not claims about this product.
Published research on the reference compound class. Provided for scientific context only. Not a claim about the product supplied.
Each lot of this research peptide was assayed at 99% or higher purity by HPLC-UV, with identity confirmed by LC-MS.
HPLC-UV purity
Batch-level certificate of analysis; identity confirmed by LC-MS.
In receptor-binding assays, the peptide acted as an agonist across at least three melanocortin receptors — MC1R, MC3R and MC4R — rather than targeting just one.
Non-selective activity across melanocortin receptor subtypes in vitro.
In rodent and early pigmentation studies, treated animals showed visible skin darkening with little or no UV exposure compared with untreated controls.
Directional finding — visible pigmentation increase with minimal UV; relative heights shown.
Quick answers about Melanotan II.
Test any batch at any lab you like. If it doesn't match our report, you get every dollar back. No return shipping, no forms, no arguments.
