Description
Melanotan II (MT-2) — synthetic melanocortin research peptide, 10mg lyophilised vial.
Melanotan II (also written MT-2 or MT2 in the research literature) is a synthetic cyclic heptapeptide analogue of alpha-melanocyte-stimulating hormone (α-MSH). It acts as a non-selective agonist at melanocortin receptors and is used in laboratory research on pigmentation pathways and receptor pharmacology.
Research areas (in-vitro and preclinical models):
- Melanogenesis — MC1R-mediated pigmentation-pathway signalling in cell and preclinical models
- Melanocortin receptor pharmacology — receptor-selectivity and binding studies across the MC1, MC3, MC4 and MC5 receptors
- Structure–activity research — MT-2’s cyclic scaffold is a reference structure in α-MSH analogue design; the related compound bremelanotide (PT-141) was derived from it
Melanotan I vs Melanotan II
Melanotan I (afamelanotide) is a linear α-MSH analogue with higher MC1R selectivity; Melanotan II is a shorter cyclic analogue with broader melanocortin-receptor activity. They are different compounds and are not interchangeable in research design. Quantum stocks Melanotan II only.
Quality & Certificate of Analysis
Every batch is tested to 99%+ purity by independent third-party HPLC and mass spectrometry. View the batch-specific Melanotan II COA.
Supplied as a lyophilised powder in a 10mg vial (not a nasal spray). For laboratory reconstitution, see bacteriostatic water. Learn more in the Melanotan II library entry and our note on the “Barbie peptide” nickname. Related melanocortin-family research compound: PT-141 (bremelanotide).
For Research Use Only. Not for human consumption. Not evaluated by the FDA or Health Canada. Sold for laboratory research purposes only.
New to research peptides? See our guides to buying research peptides in Canada, how to verify a legit supplier, and the legal status of peptides in Canada.
Frequently asked questions
What is Melanotan II researched for?
Melanotan II (MT-2) is a synthetic cyclic analogue of α-MSH used in laboratory research on melanogenesis (pigmentation-pathway signalling) and melanocortin receptor pharmacology. It is not approved for human use in Canada and is sold strictly for in-vitro research.
What is the difference between Melanotan I and Melanotan II?
Melanotan I (afamelanotide) is a linear α-MSH analogue with higher MC1R selectivity; Melanotan II is a shorter cyclic analogue with broader melanocortin-receptor activity. They are different compounds. Quantum stocks Melanotan II only.
Does Melanotan 2 increase cortisol?
This question arises because the ACTH receptor (MC2R), which regulates cortisol, belongs to the same melanocortin receptor family. Receptor-selectivity studies characterise MT-2’s activity primarily at the MC1, MC3, MC4 and MC5 receptors. We supply MT-2 for laboratory receptor research only and make no statements about effects in humans.
Do you provide dosing or usage information?
No. We do not provide dosing, administration, or protocol information for any compound. Melanotan II is supplied strictly for in-vitro laboratory research and is not for human consumption.
What purity is your Melanotan II?
99%+ purity, verified by independent third-party HPLC and mass spectrometry, with a downloadable batch-specific Certificate of Analysis.
How is Melanotan II stored?
Shipped lyophilised from Canadian stock; store refrigerated or frozen on arrival and reconstitute with bacteriostatic water for laboratory use.







Calvin Montrose –
✓ Site VerifiedGolden bronze in about 3 weeks. I used to burn way easier too. Pretty wild difference.
Ariana L. –
✓ Site VerifiedFirst time trying MT2. Really happy with how it’s going and I’ll probably grab another.
Teresa Smith –
✓ Site VerifiedA little goes a LONG way for me. Darker after just a couple uses. Very impressed.
Landon –
✓ Site VerifiedStarted really low because I wasn’t sure what to expect. Glad I did. Happy with the results so far.
Carly N. (verified owner) –
solid packaging, vacuum sealed vials, paperwork included. very professional operation
marcus –
no complaints at all. fast, tested, decent prices. does what it says on the tin
Marcus Taylor –
✓ Site VerifiedCustomer service has honestly been some of the best I’ve dealt with. Andi makes everything easy and MT2 has been great.
Sora –
✓ Site VerifiedMT2 is solid. Would definitely recommend Quantum.
Vanessa R. –
✓ Site VerifiedDoes what I wanted it to. Took me a little experimenting to find what worked best for me.
sam.o –
packaging was clean and tight, no rattling vials like some other places ive tried
Shawn B. –
you can tell they actually QC their stuff. labels, lots, seals all consistent