MSH Analogues Featured

Melanotan-II 10mg laboratory research peptide

CAS121062-08-6

FormulaC50H69N15O9

Mol. weight1024.18 Da

Quantity10mg/vial

Purity99.3% HPLC

IdentityConfirmed

ReportBy email on request

StockIn stock

Melanotan-II 10mg

Name: Melanotan-II 10mg
Brand: Pepta Labs
SKU: melanotan-2
Price: 30.50 USD
Availability: InStock

Melanotan II, MT-II, MTII, Ac-Nle-cyclo[Asp-His-D-Phe-Arg-Trp-Lys]-NH2 · CAS 121062-08-6

Melanotan-II 10mg is Pepta Labs' listing for one sealed glass vial holding a supplier-stated 10 mg of Melanotan-II (MT-II) as lyophilized powder, sold for laboratory research only. It is the only Melanotan-II size Pepta Labs lists, so every Melanotan-II order is for this 10 mg vial. The HPLC purity and mass-spectrometry identity report for the sampled production run is sent by email on request, before you order if you want it: request it on this page or email support@peptalabs.com.

Melanotan-II 10mg: $30.50 per vial ($3.05 per mg of the supplier-stated 10 mg). Ships to US addresses only. Melanotan-II 10mg is a lyophilized research peptide supplied as 10mg of dry powder per sealed vial. CAS 121062-08-6; molecular formula C50H69N15O9; molecular weight 1024.18 Da. Purity is reported as 99.3% by reversed-phase HPLC and identity is confirmed by mass spectrometry; the analytical report is available by email. Supplied for laboratory research use only.

99.3% pure Identity confirmed

$30.50

$3.05 per mg

Free US shipping · Most orders ship the next business day

Pack size and price

Quantity

Checkout uses a free account with a confirmed email.

Code FALL25: 25% off at checkout.

Free US shipping, no minimum

Most orders ship the next business day as dry powder at ambient temperature. Unopened products in original sealed condition may be returned within 30 days of delivery with return authorization.

Report by email before you order

Independent HPLC purity and MS identity report on request. Pepta Labs does not test in-house.

Payment methods

Pepta Labs accepts Cash App, Venmo, Zelle, Bitcoin and Ethereum (5% crypto discount). Payment instructions are emailed as soon as you place your order.

Research use only

Not for human or animal use. Certified at checkout from a registered account.

Specifications

Melanotan-II 10mg at a glance

Melanotan-II 10mg is supplied as lyophilized powder in a sealed glass vial for laboratory research only. It is not for human or animal use, consumption, administration, diagnosis or treatment.

Full name: Melanotan-II 10mg
Quantity: 10mg/vial
CAS number: 121062-08-6
Molecular formula: C50H69N15O9
Molecular weight: 1024.18 Da
Sequence: Ac-Nle-cyclo[Asp-His-D-Phe-Arg-Trp-Lys]-NH2 (lactam between Asp2 side-chain carboxyl and Lys7 side-chain amine)
Purity: 99.3% by HPLC
Identity: Confirmed by mass spectrometry
Physical form: Lyophilized (freeze-dried) powder, sealed glass vial
Report: Sent by email on request, before you order if you want to see it first.
Not claimed: Sterility, endotoxin or LAL, potency, pharmaceutical-grade, cGMP, contaminant-panel or vial fill-quantity testing
Category: MSH Analogues

Chemical identity

What Melanotan-II is

Melanotan-II (Melanotan II, MT-II, MTII) is a synthetic cyclic heptapeptide: Ac-Nle-cyclo[Asp-His-D-Phe-Arg-Trp-Lys]-NH2. The ring is a lactam formed between the beta-carboxyl side chain of Asp2 and the epsilon-amino side chain of Lys7; the N-terminus is an acetylated norleucine and the C-terminus is a primary amide. It contains one D-amino acid (D-Phe4) and no cysteine, so there is no disulfide bond. Molecular formula C50H69N15O9, molecular weight 1024.18 Da (average), CAS 121062-08-6, UNII UPF5CJ93X7, PubChem CID 92432. Pepta Labs lists Melanotan-II as a lyophilized powder in sealed glass vials at 10 mg per vial, with reported RP-HPLC purity and identity confirmed by mass spectrometry; the salt form is typically acetate or trifluoroacetate. Store at 2-8 C on arrival or -20 C for long-term storage, protected from light and moisture. For laboratory research use only.

Also known as: Melanotan II, MT-II, MTII, Ac-Nle-cyclo[Asp-His-D-Phe-Arg-Trp-Lys]-NH2
Structural class: synthetic cyclic heptapeptide amide with a side-chain lactam bridge (Asp2-Lys7), N-acetyl norleucine at the N-terminus
Residues: 7 amino acids
Salt form: typically supplied as acetate or trifluoroacetate salt
PubChem CID: 92432
UNII: UPF5CJ93X7

Handling

Storage, form and restrictions

Shipping: Ships at ambient temperature with no cold pack and no insulated packaging. No cold chain is required for dry powder.
Storage: Refrigerate at 2–8°C on arrival, or hold at −20°C for long-term storage. Keep sealed vials away from light and moisture.
Research use only: Offered solely for laboratory research. Not for human or animal use, consumption, administration, diagnosis or treatment. See the research use policy.

Documentation

Before you order

What are research peptides? Melanotan-II (MT-II): Cyclic Lactam Structure, Sequence, CAS 121062-08-6 and Salt Form All MSH Analogues compounds How to Read a Peptide COA HPLC and Mass Spectrometry Testing and Documentation Research Use Policy

Questions

Melanotan-II 10mg — common questions

Where can I buy Melanotan-II (Melanotan 2) 10mg?

Here, on this listing. Pepta Labs sells Melanotan-II in one size, 10 mg per vial, and lists no other Melanotan-II vial size, so every Melanotan-II order is for this 10 mg vial.

What is in the Melanotan-II 10mg vial as supplied?

A dry lyophilized powder of Melanotan-II in a sealed glass vial, with no liquid added. The 10 mg figure is the supplier-stated quantity per vial; Pepta Labs does not claim vial fill-quantity testing, and net peptide content is not reported per listing. The label names the compound, quantity and research-use designation and carries no lot or batch number.

What salt form is Melanotan-II supplied as?

Melanotan-II is typically supplied as the acetate or trifluoroacetate salt; the counter-ion is part of the dry powder in the vial. The formula C50H69N15O9 shown on this page is the peptide without its counter-ion.

How do I get the Melanotan-II HPLC and mass spec report?

Request it on this page or email support@peptalabs.com and ask for the Melanotan-II 10mg report; it is sent by email, before you order if you want to see it first. The report covers a sampled production run from the source, tested by an independent laboratory: purity by reversed-phase HPLC as main-peak area percent, identity by mass spectrometry. It is not a lot-specific certificate, and sterility and endotoxin testing are not claimed.

How should sealed Melanotan-II vials be stored?

Keep the sealed vial of dry powder at 2-8 C on arrival, or at -20 C for long-term storage, protected from light and moisture. Leave it sealed until it is needed in the lab.

Which Pepta Labs guides cover Melanotan-II in more depth?

The Learn guide on Melanotan-II sizes, purity reports and verification covers its chemistry, how the listing is supplied and how to confirm Melanotan-II identity from the mass spectrometry section of a report. How to Read and Verify a Peptide Certificate of Analysis (COA) explains the HPLC and mass spectrometry sections of any report.

What does Melanotan-II 10mg cost?

Melanotan-II 10mg starts at $30.50 per vial. 3-vial packs are 7% off and 5-vial packs are 14% off. US shipping is free with no minimum.

What payment methods are accepted?

Pepta Labs accepts Cash App, Venmo, Zelle, Bitcoin and Ethereum (5% crypto discount). Payment instructions are emailed as soon as you place your order.

Is this for human or animal use?

No. Melanotan-II 10mg is offered solely for laboratory research and is not for human or animal use, consumption, administration, diagnosis or treatment. Buyers certify this at checkout.

What is the difference between Melanotan-II and PT-141?

They share the same seven residues, N-acetyl norleucine, D-Phe4 and Asp-Lys lactam ring. Melanotan-II ends in a C-terminal primary amide (C50H69N15O9, 1024.18 Da, CAS 121062-08-6), whereas PT-141 (bremelanotide) ends in a free carboxylic acid (C50H68N14O10, 1025.17 Da, CAS 189691-06-3). The mass difference is about 1 Da.

Is Melanotan-II a cyclic peptide?

Yes. The ring is closed by a lactam (amide) bond between the side chains of Asp2 and Lys7, not by a disulfide; the molecule contains no cysteine. The N-terminal norleucine sits outside the ring.

What does the CAS number 121062-08-6 identify?

It is the Chemical Abstracts Service registry number for the free Melanotan-II peptide.

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