Name: Melanotan 2 10mg (10 Vials / Kit)
Brand: HK Peptide
SKU: HK-ML10
Price: 40.00 USD
Availability: InStock

What is Melanotan 2?

Melanotan 2 is a seven-amino-acid cyclic peptide originally developed at the University of Arizona during sunless-tanning research. It is structurally related to, but pharmacologically broader than, the more receptor-selective compound Melanotan 1, also known as afamelanotide.

How it is understood to work

Unlike Melanotan 1, which acts mainly at MC1R, Melanotan 2 is a non-selective agonist across MC1R, MC3R, MC4R and MC5R. MC1R activation on melanocytes drives melanin production, while central MC3R/MC4R activity in the hypothalamus has been linked in study models to effects on appetite and sexual-arousal pathways, part of why MT-2 shows a broader activity profile than the more selective Melanotan 1.

Research status

Melanotan 2 is studied in research on skin pigmentation, melanocortin receptor pharmacology, appetite regulation and sexual-arousal signaling. Its non-selective receptor activity subsequently informed the development of bremelanotide (PT-141), a related, more targeted melanocortin agonist now FDA-approved for a specific indication, though Melanotan 2 itself remains an unapproved research compound.

This listing: HK Peptide Melanotan 2

Brand: HK Peptide
Kit: 10 vials × 10 mg (100 mg in total)
Price per vial: $4.00
Price per mg: $0.40
Also sold by: TFC Peptides 10mg $45.00 · Uther Peptide 10mg $60.00

Lab testing

HK Peptide published a Janoshik #216042 report for this compound. Test: Purity & Content (HPLC). Result: 99.95% purity · 10.78 mg. Tested Jul 31, 2026. Verification key QAI8QRI847J2 can be checked at janoshik.com.

View the report · How to read it (Testing 101) · Every report for this compound

Bought through escrow: the brand is only paid after you confirm delivery. If the parcel never arrives, or an independent test shows the wrong compound or a significant under-fill, open a claim before releasing payment.

Specifications

Compound: Melanotan 2
Also known as: MT-2, Melanotan II
Class: Cyclic alpha-MSH analogue (melanocortin receptor agonist)
Form: Lyophilized (freeze-dried) powder
Per vial: 10mg
Molecular formula: C₅₀H₆₉N₁₅O₉
Molecular weight: 1024.2 g/mol
Stated purity: ≥99% (HPLC)
Appearance: White lyophilized powder

Handling & storage

Supplied as a lyophilized powder; keep unopened vials frozen and protected from light, and once reconstituted with bacteriostatic water, store refrigerated and use within your protocol’s defined window.

Concentration check: adding 2 ml of bacteriostatic water to one 10 mg vial gives 5 mg/ml. The Research Lab calculator in your dashboard works this out for any volume.

Questions

How does Melanotan 2 differ from Melanotan 1?

Melanotan 1 is a more receptor-selective analogue acting largely at MC1R, while Melanotan 2 is non-selective across MC1R, MC3R, MC4R and MC5R, which is why the two peptides are studied for a broader, more overlapping range of effects in the case of MT-2.

Is Melanotan 2 related to any approved medicine?

It is a structural relative of bremelanotide (PT-141), an FDA-approved melanocortin-receptor agonist, but Melanotan 2 itself is a distinct, non-selective compound that has not been approved as a drug.

How much Melanotan 2 is in this kit?

10 vials of 10 mg each, so 100 mg in total. The lab testing section above shows what the brand’s tested vial actually contained.

For laboratory research use only. Not for human or veterinary use. Nothing on this page is medical advice.