MTII 10 mg (Melanotan II; MT-2) from Peptide Tech is a premium, lyophilized research-use-only (RUO) peptide supplied at ≥99% purity (HPLC & MS verified). MTII is a cyclic heptapeptide analog of α-MSH with the sequence Ac-Nle-cyclo[Asp-His-D-Phe-Arg-Trp-Lys]-NH2 (lactam bridge between Asp and Lys). It’s widely used in in-vitro melanocortin receptor studies, cAMP signaling assays, and ligand-binding workflows where sequence fidelity and analytical traceability are essential.
Specifications
| Property | Details |
|---|---|
| CAS Number | 121062-08-6 |
| Chemical Name | Ac-Nle-cyclo[Asp-His-D-Phe-Arg-Trp-Lys]-NH2 (Melanotan II; MT-2) |
| PubChem CID | 92432 |
| Molecular Formula | C50H69N15O9 |
| Molecular Weight | ≈ 1024.18 g/mol |
| Physical Appearance | White to off-white lyophilized powder |
| Sequence | Ac-Nle-c[Asp-His-D-Phe-Arg-Trp-Lys]-NH2 (cyclic 2→7) |
| Container | 3 mL glass vial (10 mg net content) |
| Purity | ≥99% verified by HPLC & MS (lot COA via QR) |
| Solubility | Soluble in sterile water or compatible aqueous buffer; gentle agitation/brief sonication may aid dissolution. Optimize pH/ionic strength for your assay; filter-sterilize if required. |
| Intended Use | Laboratory research only (RUO). Not for human or animal use. |
Identifiers validated against NIH GSRS and Sigma listings; structure/identifier link via PubChem CID above.
Molecular Structure
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Potential Applications in Research
Strictly in-vitro, cellular, or biochemical contexts. No health, diagnostic, or therapeutic claims.
- Melanocortin receptor signaling (MC1R/MC3R/MC4R) using cAMP reporter assays, CRE-luciferase, or HTRF/cAMP kits in stable cell lines.
- β-arrestin recruitment & receptor internalization (BRET/ELISA/confocal) to study trafficking and biased signaling profiles.
- Radioligand or competition binding in membrane preparations to quantify affinity/kinetics and rank-order potency versus related analogs.
- Melanogenesis pathway readouts in vitro (e.g., tyrosinase activity, melanin content) in melanocyte cultures under controlled conditions.
- Analytical method development (RP-HPLC/LC–MS/MS) for identity, stability, and recovery in relevant matrices.
Quality, Storage & Handling
Every lot is confirmed by HPLC (purity) and MS (identity), with QR-linked batch documentation. Independent U.S. labs verify purity, quantity, and endotoxin.
- Storage (lyophilized): −20 °C long term or 2–8 °C short term; keep desiccated and protected from light.
- After reconstitution: Aliquot and store at ≤−20 °C (or −80 °C per SOP); avoid repeated freeze–thaw cycles.
- Reconstitution tips: Use sterile water or suitable buffer; gently invert to dissolve; filter-sterilize only if required by your assay.
Shipping & Fulfillment
Ships in validated cold-chain packaging. In-stock orders placed before the daily cutoff ship the same day. 2-Day FedEx/UPS is standard, with overnight options available. Automated text/email updates included; international shipping available where permitted.
Compliance & RUO Disclaimer
For laboratory research only. Not a drug, cosmetic, food, or household chemical. Not for human or animal use, ingestion, diagnostic, or therapeutic applications. Buyers warrant they are qualified to handle RUO materials under applicable laws and institutional guidelines. COAs available upon request or via QR.
FAQs
- Is this intended for human or veterinary use?
- No. This product is sold strictly as RUO—not for human or animal use.
- What purity do you provide?
- Each 10 mg vial is ≥99% by HPLC with MS identity confirmation; third-party testing is performed on every lot (see the COA via QR).
- How should I reconstitute it?
- Use sterile water or a compatible aqueous buffer; gently invert until fully dissolved. If your protocol requires sterility, pass through a 0.22 µm filter and aliquot to avoid repeat freeze–thaw.
- Which in-vitro assays is MTII commonly used in?
- Typical RUO applications include melanocortin receptor cAMP assays, β-arrestin/internalization workflows, radioligand binding, and LC–MS/MS method development.
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