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Melanotan II

Melanotan II at a glance

Peptide.Express Melanotan II 10mg (CAS 121062-08-6) is $50, ≥99% HPLC as the sourcing specification — not a measurement of any one vial — with a molecular weight of 1024.2 Da and molecular formula C50H69N15O9; measured purity and mass are only on that lot’s Certificate of Analysis you can verify before purchase. Same-day dispatch on business days (orders before 2 PM EST), free over $150. For in-vitro laboratory research use only.

Melanotan II — research-grade lyophilized peptide vial from Peptide.Express, ≥99% HPLC sourcing specification
≥99% HPLC SpecUS SynthesizedIn Stock

For laboratory research use only. Not for human or veterinary use.

Research-Grade Compound

Melanotan 2 (also written Melanotan II, or MT-2) is a synthetic cyclic heptapeptide analog of α-melanocyte-stimulating hormone that acts as a non-selective agonist at four of the five melanocortin receptors: MC1R, MC3R, MC4R and MC5R. Molecular formula C50H69N15O9, molecular weight 1,024.2 Da, CAS 121062-08-6. Structure: Ac-Nle-cyclo[Asp-His-D-Phe-Arg-Trp-Lys]-NH2.

Purity standard: Melanotan II is sourced to ≥99% by HPLC — sourcing spec.

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10mg · $50.00/vial

$50.00$60.00ListUSD / Unit
1

Certificate of Analysis

Showing CoA for 10mg.

Accession / CoA number
48687
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≥99% HPLC SpecSourcing specification
CoA Where On FileThird-party CoA
Ships Same DayBefore 2 PM EST
Free US ShipOrders over $150
Showing CoA for 10mg
Certificate Details
Accession / document id48687
Sourcing spec≥99% by HPLC
Accession / CoA number48687
Methodology
HPLCLC-MS/MS
Verify Results with Testing Laboratory

Issued by an independent third-party laboratory; Peptide.Express does not test in-house. Results are reproduced as-is and confirm compound identity, purity, and the analytical methods used. For questions about specific results, contact support@peptide.express.

Safety Data Sheet (SDS)
Catalog identity reference

Theoretical identity from the catalog or verified registry record — not a laboratory observation from the Certificate of Analysis above.

CAS Number121062-08-6
Molecular FormulaC50H69N15O9
Molecular Weight1024.2 g/mol
SequenceAc-Nle-cyclo[Asp-His-D-Phe-Arg-Trp-Lys]-NH2 (cyclic heptapeptide)
≥99% HPLC sourcing specThird-party CoA where on fileResearch use only

Melanotan II price per mg

Melanotan II sizes, single-vial and pack prices, price per mg, lot number, measured HPLC purity and Certificate of Analysis link
Size1-vial pricePack prices$/mgLot #Measured HPLC %CoA
10mg$50.00—$5.00Pending CoAPending CoAPending CoA

$/mg is the single-vial price divided by the labeled mg per vial. Lot and measured HPLC are listed only when that size's own Certificate of Analysis is on file. All certificates are in the lab results index. For laboratory research use only.

Melanotan II Specifications

Melanotan II (CAS 121062-08-6) is studied in in-vitro and animal models via Non-selective melanocortin receptor agonist (MC1R/MC3R/MC4R/MC5R). This section covers the composition and analytical specification data. Analytical standard: ≥99% by HPLC. Stocked material is for laboratory research use only. Identity, structure, and handling values come from the existing profile.

Identity, purity and storage specifications for Melanotan II.
CompoundMelanotan II (MT-II)
CAS121062-08-6
Molecular formulaC50H69N15O9
Molecular weight1,024.2 Da
SequenceAc-Nle-cyclo[Asp-His-D-Phe-Arg-Trp-Lys]-NH2
Purity≥99% HPLC specification
FormLyophilized powder
Storage (lyophilized)-20°C, desiccated, protected from light
Storage (reconstituted)2–8°C, use within 14–28 days

Reconstituting Melanotan II: step-by-step peptide reconstitution guide. Concentration maths: peptide reconstitution calculator.

Buying Melanotan II — Frequently Asked Questions

What purity standard and testing does Peptide.Express apply to Melanotan II?

Sourced to a ≥99% HPLC specification. Where a certificate is on file, compare a reported mass with 1,024.2 Da. Endotoxin and visual lines appear only when the laboratory reported them. The mass on that document is the field to check first given how close PT-141 sits.

Where is the Certificate of Analysis for Melanotan II?

On this page and in the Peptide.Express lab results library, indexed by batch number. Sourced against a ≥99% HPLC purity specification. Third-party Certificates of Analysis are published where on file.

How should Melanotan II be stored before and after reconstitution?

Lyophilized: -20°C, desiccated and protected from light, stable for 24 months. Reconstituted: 2–8°C, used within 14–28 days. Do not freeze reconstituted solution.

Is Melanotan II legal to purchase for laboratory research?

Melanotan II is not a controlled substance in the United States and is available for laboratory research purchase. It has no approved human use anywhere, and Peptide.Express supplies it for in-vitro research only.

Is Melanotan II FDA approved?

No. Melanotan II is not approved by the FDA for any indication and has no marketing authorisation as a medicine.

Melanotan II research reference

Research Compounds Related to Melanotan II

PT-141The MC3R/MC4R-preferring analog differing only at the C-terminus.GHK-CuCopper tripeptide studied in dermal fibroblast rather than melanocyte models — a separate skin-research pathway.Kisspeptin-10GPR54 agonist for hypothalamic research where the target is the GnRH axis rather than melanocortin receptors.DSIPEndogenous nonapeptide studied in CNS and neuroendocrine models.

All products are sold for in vitro laboratory research use only. Not intended for human consumption, clinical use, or veterinary use. Peptide.Express makes no medical claims. Consult the published literature for research application guidance.

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