Melanotan II — The Melanin Peptide
Melanotan II is best known in research for one thing: melanin. It’s a melanocortin peptide studied for how the body’s pigment pathways are switched on, and it also touches the same appetite and libido pathways as its melanocortin cousins. Every batch is independently third-party tested for purity and ships with its own certificate of analysis.

Why source Melanotan II from Aeternum Life
Every Melanotan II batch is verified by an independent laboratory.
HPLC-tested identity and purity on every Melanotan II lot.
Sourced and handled to strict, defined specifications.
Discreet, tracked delivery.
What is Melanotan II?
Melanotan II is a synthetic melanocortin peptide — an analog of α-MSH, the hormone that signals your body to produce melanin. In research it’s the go-to molecule for studying the pigmentation pathway, and because it hits melanocortin receptors broadly, it also connects to appetite and libido.
That broad melanocortin action is why Melanotan II is studied across pigmentation, appetite and arousal research. It is a research material only, and studies typically note effects such as nausea and darkening of moles — which is why it’s handled carefully in a research setting. Aeternum Life supplies it as ultra-high-purity research material with a batch-specific Certificate of Analysis on every order.
Research directions

Melanotan II is a broad melanocortin peptide. Here’s where the research goes.
The headline: Melanotan II is the go-to research molecule for the pigment (melanin) pathway.
It activates melanocortin receptors broadly, which is why it reaches several systems.
The melanocortin system ties into appetite, a secondary research angle.
Like PT-141, it touches melanocortin-driven arousal pathways.
Studies note side-signals (e.g. nausea, mole darkening), so it’s handled carefully — research use only.
For research purposes only. These materials are not drugs or dietary supplements and are not intended to diagnose, treat, cure or prevent any disease.
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How Melanotan II is tested
- Certificate of Analysis (COA) for every Melanotan II batch
- HPLC purity & identity
- Mass-spectrometry confirmed
- Batch-tested and fully traceable
Every Melanotan II lot is released only after independent verification, so what you receive matches its stated identity and purity.
Handling & Storage
Guidance for handling Melanotan II as a laboratory research material.
Store lyophilized Melanotan II cold and protected from light, sealed and dry until use.
Handle Melanotan II according to standard laboratory practice for research materials.
Each Melanotan II batch ships with a batch-specific COA for identity and purity.
Melanotan II is supplied strictly for laboratory and research use. Not for human or veterinary consumption; no administration or dosing guidance is provided.
Specifications
- Name
- Melanotan II
- CAS
- 121062-08-6
- Appearance
- White lyophilized powder
- Size
- 10 mg per vial
- Purity
- ≥ 99% (HPLC, see COA)
- Storage
- Store at 2–8°C, protect from light
For research use. Not intended to diagnose, treat, cure or prevent any disease.
Frequently asked questions
What is Melanotan II studied for?
It’s studied around the pigmentation (melanin) pathway and, more broadly, melanocortin receptors that also touch appetite and libido. We share these as research directions, not medical claims.
Anything to note about handling it?
Research notes side-signals like nausea and darkening of moles, so it’s handled carefully — research use only. Reconstitution and handling guides are shared in our Telegram community.
Is Melanotan II for human use?
No. Aeternum Life supplies Melanotan II strictly as a research-grade material for laboratory research. It is not sold for human or veterinary consumption.
Is a COA available for Melanotan II?
Yes — every Melanotan II batch ships with a batch-specific Certificate of Analysis covering identity and purity.

About Aeternum Life
Aeternum Life is a Japan-inspired peptide brand built on purity, transparency and rigorous testing — the same standard behind the Melanotan II on this page. Every product is presented by its composition and backed by batch-specific documentation.
Explore the full Aeternum Life range
Melanotan II is one of more than thirty research-grade materials we supply — each one backed by a batch-specific COA and independent testing.
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