# Buy Melanotan II (MT2) 10 mg in Australia

Supplied by Australian Research Peptides Pty Ltd to laboratories and
researchers in Australia, for in vitro research purposes only. Stock is
held and dispatched within Australia.

Melanotan II 10 mg costs $79.99 in Australia from Australian Research Peptides, which serves laboratories and researchers; the vial is out of stock right now. Melanotan II's 10 mg certificate reports 99.877% purity. Studied in melanocortin receptor research, Melanotan II is a synthetic alpha-MSH analogue: seven amino acids ringed by a lactam bridge, freeze-dried in a sealed vial. The IUPHAR/BPS Guide to Pharmacology logs it as a full agonist at human MC1, MC3, MC4 and MC5 receptors, recording no MC2 interaction. In vitro research purposes only.

Research context: melanocortin MC1 receptor research.

## Strengths, prices and availability

| Strength | Price (AUD) | Availability | SKU |
| --- | --- | --- | --- |
| 10 mg | $79.99 | Out of stock | 73731 |

## Certificate of analysis

Tested by Janoshik, an independent laboratory, before release. The
testing is commissioned by the manufacturer rather than by Australian
Research Peptides. Methods: HPLC for purity, mass spectrometry for
identity. Each certificate below is the laboratory's own report,
published on this site.

### 10 mg

- Assayed purity: 99.877%
- Measured peptide content: 12.33 mg
- Laboratory batch: 2026-06
- Date analysed: 19 June 2026
- Testing laboratory: Janoshik
- Certificate: https://www.australianresearchpeptides.au/assets/coa/melanotan-ii-10-coa.png?v=124

Full certificate library: https://www.australianresearchpeptides.au/coa

## Specifications

| Property | Value |
| --- | --- |
| Scientific name | Melanotan II |
| Compound class | Cyclic alpha-MSH analogue; non-selective melanocortin receptor agonist |
| Sequence | Ac-Nle-cyclo[Asp-His-D-Phe-Arg-Trp-Lys]-NH2 |
| Appearance | White to off-white lyophilised powder |
| Packaging | Sealed, tamper-evident glass vial |
| Storage | Sealed, freeze-dried: below -15 °C, dry and out of direct light |

## About

Melanotan II is studied at the melanocortin receptors. There are five of them, MC1R through MC5R, and they are docking points on the surface of cells. The IUPHAR/BPS Guide to Pharmacology records it as a full agonist at the human MC1, MC3, MC4 and MC5 receptors, and lists no interaction at MC2. Agonist means it turns those receptors on rather than blocking them. MC1R is the subtype carried by melanocytes, the pigment-producing cells, which is why most published work on this compound concerns that receptor.

The evidence base is thin and almost entirely preclinical. Development of the compound as a medicine was halted on safety grounds. Published work sits in melanocortin receptor research and runs in cell culture and animal models. Australian Research Peptides supplies the vial as a laboratory reference material and draws no conclusion of its own from that literature.

Melanotan II is a cyclic peptide of seven amino acids, built from residues 4 to 10 of alpha-MSH and closed into a ring by a lactam bridge. Its sequence is Ac-Nle-cyclo[Asp-His-D-Phe-Arg-Trp-Lys]-NH2. The free base is C50H69N15O9, molar mass 1,024.2, and its CAS number is 121062-08-6. ARP leaves those rows out of the spec table because the acetate salt that research peptides usually arrive as carries a different formula and a different mass.

Two neighbours in this catalogue get confused with it. Melanotan I is afamelanotide, a linear thirteen-residue peptide approved as a medicine by the EMA in 2014 and the FDA in 2019, and ARP does not stock it. PT-141 is bremelanotide, which differs only at the end of the ring, and ARP lists that one separately. The popular claim that Melanotan I acts at one receptor and Melanotan II at several is not what the Guide to Pharmacology shows — both are logged as full agonists at the same four subtypes.

## Questions

### Where to buy Melanotan II in Australia?

Australian Research Peptides supplies Melanotan II within Australia — no vial can be packed at present, and the 12pm Sydney time weekday cut-off governs dispatch again once one arrives. Melanotan 2, MT-2, MT2 and MT II all resolve to this one listing, catalogued as one listing. Tracked delivery runs to every state and territory, Express or standard, and the parcel starts its journey inside Australia.

### What is Melanotan II?

Melanotan II is a cyclic seven-amino-acid peptide and a non-selective melanocortin receptor agonist, studied in melanocortin receptor research because MC1R is the subtype expressed on melanocytes. Other melanocortin subtypes have been examined in cell culture and animal models. Australian Research Peptides supplies this material for laboratory work and draws no conclusion of its own from that literature.

### What is MT2?

MT2 is the abbreviation for Melanotan II, and both name one compound on one listing. Shoppers also type melano tan 2 as two words, melanotan2 closed up, or mt 2 peptide. The spacing is a search habit rather than a second product, and the bare word melanotan reaches this same entry because Australian Research Peptides carries no Melanotan I.

### How does Melanotan II work?

Melanotan II is a lab-made version of alpha-MSH, one of the body's own hormones. It binds melanocortin receptors and activates them, which is what an agonist does. The Guide to Pharmacology gives it full agonist activity at four human subtypes: MC1, MC3, MC4 and MC5. MC1 is the one carried by melanocytes, the pigment-making cells. MC3 and MC4 are found largely in brain tissue, which is where the remaining receptor literature sits.

### What is supplied in a Melanotan II vial?

A Melanotan II vial holds freeze-dried peptide powder and nothing else. The quantity is recorded against the vial in Australian Research Peptides' catalogue. No diluent, no solvent and no preservative is added, and nothing arrives pre-mixed. The glass vial is tamper-evident, so a broken seal is visible before you open it. Any diluent is chosen by the laboratory and is not part of the vial.

### How many amino acids are in Melanotan II?

Melanotan II has seven amino acids, which makes it a cyclic heptapeptide. It takes the 4-to-10 stretch of alpha-MSH, a natural hormone thirteen residues long. A lactam bridge ties the aspartic acid to the lysine and closes the chain into a ring. That bridge is the design change separating Melanotan II from the linear Melanotan I.

### Is Melanotan II the same compound as the PT-141 listing?

No — PT-141 is bremelanotide, a different molecule from Melanotan II. [PubChem](https://pubchem.ncbi.nlm.nih.gov/compound/92432) gives PT-141 the formula C50H68N14O10 and Melanotan II C50H69N15O9, so they differ at one end of the shared ring. Each is its own listing, with its own stock and its own testing. This pair is confused more often than any other in the Australian Research Peptides catalogue, so check which compound a comparison actually names.

### How do I pay for Melanotan II?

A Melanotan II order holds its stock for two business days while payment clears, with reminder emails along the way. If nothing arrives by the deadline the reservation lapses and the vials return to general stock — the order is not cancelled out of spite, the stock is simply released for someone else.

### Is Melanotan II banned in Australia?

Melanotan II holds no TGA approval, is not a registered medicine in Australia, and has been the subject of public [TGA](https://www.tga.gov.au/safety/safety-monitoring-and-information/safety-alerts/melanotan-ii-tanning-peptide-products-found-be-inconsistently-dosed) warnings about products containing it. Australian Research Peptides supplies it as a laboratory research chemical, not for use in people or animals. Whatever obligations follow from holding it are yours to check, not the supplier's to resolve.

### Do Melanotan II and PT-141 overlap in their receptor targets?

Melanotan II and PT-141 act on the same melanocortin receptor family rather than on separate targets, because PT-141 is what Melanotan II becomes when it breaks down. Nothing has been published on the pair together. The relationship between the two listings is worth understanding before treating them as complementary — they are closer to two points on one pathway.

### Is it normal for a Melanotan II vial to look empty?

Melanotan II is supplied as ten milligrams of dry ring-closed peptide, an amount that looks like almost nothing once freeze-drying has taken the water out. Many vials show only a whitish rim around the base or a scattering of fine particles. Colour deserves more attention than volume with this compound: sound dry material is white to off-white, so a browned or yellowed deposit is the real warning sign.

### How should Melanotan II be stored?

Melanotan II carries a tryptophan, the amino acid most prone to oxidising, so keep the vial dark and dry. Bachem's figure for a dried peptide is anything below -15 °C, with colder better still. Open it only after a desiccator — the sealed box that keeps air dry — has brought the glass back to room temperature, otherwise the powder pulls in moisture. Reseal tightly. Solutions go into aliquots — small single-use portions — and stay frozen.

### Does Melanotan II expire, and how do I know if a vial has degraded?

Sealed Melanotan II powder kept cold and dry is the stable state; the fragile state is after reconstitution, where it is refrigerated and has a far shorter life. Visible signs that a mixed vial should not be used are cloudiness, particles, or powder that will not fully dissolve. Colour change in the dry cake is also a reason to stop.

### How do you reconstitute Melanotan II?

Melanotan II is a ring-closed powder, and it goes into solution without much coaxing. Bring the vial up to room temperature while the seal is still on. Aim the diluent at the glass shoulder, never at the cake itself. Roll the vial between your fingers until the liquid clears, and do not shake. Bachem suggests a water bath sonicator for particles that hold out. Aliquot and freeze.

### How long does reconstituted Melanotan II keep?

Reconstituted Melanotan II is refrigerated at 2–8 °C and used inside eight to twelve weeks. Melanotan II closes its ring with an amide, and losing that amide yields the free acid catalogued separately as PT-141 — so it has a named chemical fate in water rather than a vague one. How quickly that runs in a chilled vial has never been published.

### Why is Melanotan II cloudy after mixing?

With Melanotan II, transient haze and lasting haze mean opposite things. Air folded in while the cake dissolves disperses within minutes, as does the slower clearing of contents used straight from cold. Material that stays clouded once warmed and rested, or leaves solid on the bottom refusing to shift, has either not dissolved properly or aggregated — and discolouration of the dry powder carries equal weight.

### What is Melanotan II dissolved in for laboratory work?

Melanotan II ships as a dry cake and must be dissolved before it is pipetted. Diluent means the liquid a powder goes into, nothing more technical than that, and Melanotan II usually goes into an aqueous one. Nothing liquid is packed inside this box with it.

### Who supplies Melanotan II in Australia?

Melanotan II is supplied by Australian Research Peptides — ARP — and its batches are HPLC-tested by an independent laboratory, commissioned by the manufacturer. ARP shelves this vial beside PT-141 in Melanocortin Agonists and carries no Melanotan I. As an Australian business it posts domestically rather than across a border, and takes PayID or a direct bank transfer.

### How much does Melanotan II cost in Australia?

Melanotan II carries a single Australian-dollar price per vial, because it is listed in one size only — no strength ladder to compare and no per-milligram rate to work out. Australian Research Peptides draws both that figure and the vial's current availability from live catalogue data, never from hard-typed text. It holds the HPLC Verified grade, and its laboratory certificate is published on the certificates page.

### Does a Melanotan II order qualify for free shipping in Australia?

Melanotan II is among Australian Research Peptides’ lower-priced lines, so a pair of vials sits under the free Standard tracked post threshold and three clear it. Adding the consumables a dry vial cannot be used without takes a two-vial order most of the way there. Free Express Post is a different and higher threshold again. Both are read on the pre-discount subtotal.

### How do I get Melanotan II online?

Melanotan II is supplied online by Australian Research Peptides, a domestic seller that posts within the country and sends nothing overseas. Payment is by PayID or bank transfer, which rules out wallets, instalment accounts and crypto altogether. A new order is issued its own payment reference and bank details by email, and the vials stay reserved until the payment is matched. Nothing is taken by telephone.

### How long does Melanotan II take to arrive in Australia?

Melanotan II normally arrives within a 2–5 business day window on standard tracked post, or as few as 1–2 by Express Post depending on the destination state. Those figures are capital-city routes. A regional or remote address generally adds days on top — the difference between Perth and a WA mining town, or Brisbane and far north Queensland, is real, and is the carrier's rather than ours.

### Is a Melanotan II vial ready to pipette as supplied?

A Melanotan II vial is not ready to pipette as supplied, because it arrives sealed with dry powder inside and has to be dissolved in a diluent before any volume can be measured from it. The vial holds the peptide alone, and the diluent and measuring equipment are chosen by the laboratory.

### Is Melanotan II legal in Australia?

Melanotan II is not registered with the Therapeutic Goods Administration. That makes it an unapproved good rather than a medicine you can be prescribed off the shelf, and the TGA has publicly warned consumers against unapproved products containing melanotan. Australian Research Peptides sells Melanotan II strictly as a bench reagent for glassware and cultured cells, not as a therapeutic good, and gives no advice on use to anyone for any purpose.

### Is Melanotan II banned in sport?

Melanotan II is banned in sport throughout the year. No government health authority in any country has licensed it, placing it inside S0, the residual heading covering substances the list does not name individually. The intended purpose changes nothing — the anti-doping rule reads what a sample contains. [Sport Integrity Australia](https://www.sportintegrity.gov.au/what-we-do/anti-doping/substance-education) handles queries from Australian athletes.

### Will customs seize Melanotan II ordered from overseas?

Melanotan II sent by an overseas seller can be detained on arrival, since unapproved goods are exactly what border screening targets, and once a package is held there is rarely any remedy against a foreign vendor. Ordering it from Australian Research Peptides avoids that entirely — ARP dispatches within Australia and never presents a parcel for clearance. Australian Border Force publishes what it detains and under whose authority.

### Is Melanotan II tested before it is supplied in Australia?

Melanotan II is checked before Australian Research Peptides sells it, and that testing is done by an independent laboratory that the manufacturer pays for. High-performance liquid chromatography measures how much of the sample is the peptide. Mass spectrometry then confirms the molecule really is Melanotan II and not a look-alike powder. Identity is the load-bearing half for Melanotan II, because it, Melanotan I and PT-141 sit close enough in name to be mixed up. A matching certificate is currently published for this product and strength.

### What else is Melanotan II known as?

Melanotan II is commonly shortened to MT2. Australian Research Peptides also uses MT2 as its stock code. PubChem lists the free base under CAS 121062-08-6 and includes Melanotan II acetate among its synonyms. Melanotan I, also called afamelanotide, is a separate compound rather than another name for Melanotan II.

### How does Melanotan II differ from Melanotan I?

Melanotan I is afamelanotide, a linear peptide of thirteen amino acids. Melanotan II is a ring of seven. [PubChem](https://pubchem.ncbi.nlm.nih.gov/compound/16197727) puts afamelanotide at 1,646.8 g/mol against 1,024.2 for Melanotan II, so they are not close in size. Both are logged as full agonists at the human MC1, MC3, MC4 and MC5 receptors, which means the popular one-receptor-versus-several story does not hold up. Australian Research Peptides lists Melanotan II only.

### Is Melanotan II supplied as a freeze-dried vial or a nasal spray?

Melanotan II is supplied by Australian Research Peptides as a single 10 mg vial of freeze-dried powder, stock code 73731. It is not a spray, a solution, or a pre-mixed device of any kind, so it has to be reconstituted before laboratory work begins. Nasal preparations offered elsewhere carry the same peptide in a different presentation, and nothing in this listing supplies one. The figure on the label is the dry weight sealed inside the vial.

### Can I buy Melanotan II at Chemist Warehouse?

Melanotan II is available from Australian Research Peptides and not from Chemist Warehouse or any other Australian pharmacy. It is not a registered medicine in this country and no approved formulation of it exists, so there is nothing a pharmacist could lawfully supply. ARP supplies it strictly as a research compound, sealed in a glass vial for laboratory use.

## Also searched as

Melanotan 2, MT2, MT-2

## Ordering

- Standard post $12.99, free on orders over $199.00
- Express post $16.99, free on orders over $299.00
- Payment: PayID or bank transfer
- Dispatched from within Australia; orders do not cross a border

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