Melanotan II is a synthetic analog of alpha-MSH (alpha-melanocyte-stimulating hormone) that acts as a melanocortin receptor agonist. It is studied in pigmentation-related research and supplied for research use only.
What Melanotan II is
Melanotan II is a peptide analog based on alpha-MSH, a naturally occurring peptide in the melanocortin system. As a melanocortin receptor agonist, it interacts with receptors involved in pigmentation, which is the focus of research interest.

How it is studied
In the laboratory, Melanotan II is studied as a research compound in pigmentation research. As with any research peptide, it is a study tool and is not approved or intended for human use.
Browse research-grade peptides
Every Axis compound is third-party tested to 99.4%+ purity, with a certificate of analysis on every batch.
What to look for
A research-grade Melanotan II should ship with a batch-specific certificate of analysis confirming purity and identity. It is often compared with PT-141, a related melanocortin peptide.
Key takeaways
- Melanotan II is a synthetic analog of alpha-MSH.
- It acts as a melanocortin receptor agonist.
- It is studied in pigmentation-related research.
- Research-grade Melanotan II is supplied for research use only.
A note on research use
The peptides supplied by Axis Peptide Labs are reference compounds for laboratory and research use only. They are intended for qualified researchers working in academic, institutional, and analytical settings. They are not drugs, foods, cosmetics, or medical products, and they are not intended for human or veterinary consumption. Documented identity and documented purity are what matter most when sourcing a compound, both of which are published on the Axis certificates of analysis page.
