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Documented in Peer-Reviewed Research

Melanotan II

Cyclic Heptapeptide

Melanotan-2 is a synthetic cyclic heptapeptide analogue of alpha-melanocyte-stimulating hormone (α-MSH). It binds to melanocortin receptors MC1R through MC5R and has been studied for melanogenesis and photoprotection research.

  • MC1R Agonism
  • Melanogenesis
  • Photoprotection
  • Receptor Binding

Quantified findings reported in the literature

7

amino acid residues in the Melanotan-2 cyclic peptide sequence

Hadley & Dorr, Peptides 2006

5

melanocortin receptor subtypes (MC1R–MC5R) with documented binding affinity

Cai et al., J Med Chem 2005

96-99%

HPLC-verified purity range across published batch testing

Stemcode Peptides COA data

Published, peer-reviewed studies

  1. Peptides2006

    The melanocortin peptides and their receptors: relevance to Melanotan-2 research

    Review of melanocortin peptide pharmacology and the receptor binding profile of Melanotan-2 across MC1R–MC5R subtypes.

    View source on PubMed/DOI ↗
  2. J Med Chem2005

    Design of potent and selective melanocortin receptor agonists

    View source on PubMed/DOI ↗

Third-party analytical reports

Certificates of Analysis from independent laboratories for products supplied by Stemcode. Reported values describe the analysed material; they are reported as documented and are distinct from the published literature above.

Melanotan-IIFreedom Diagnostics
Net content
0.59 mg/mL
Lot
MLN06MG-2501
COA #
2603200346
Report date
03/23/2026
View full report ↗
Melanotan-IIJanoshik
Purity (HPLC)
98.687%
Net content
0.50 mg/mL
Lot
MLN06MG-2501
COA #
#86864
Report date
11/10/2025
View full report ↗

Stemcode supplies Melanotan II as a research-grade compound for laboratory research use only — not for human or animal consumption.

View the research-grade product →

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Every compound is documented in published, peer-reviewed literature. Our research library indexes 43 studies across 35 journals for 20 compounds.

Our Studies →
43

Peer-reviewed studies in our research library have examined the mechanisms of action of these peptide compounds.

20
Peptide Compounds
35
Journals Referenced
43
Published Studies

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