
PT-141 (Bremelanotide)
SKU PP-PT141 · 10mgCyclic melanocortin-receptor agonist heptapeptide for MC3R / MC4R signalling research.
PT-141 is arriving shortly
Pricing will be confirmed on release. Register your interest and we'll contact you as soon as PT-141 is in stock.
About PT-141
PT-141 (bremelanotide) is a synthetic cyclic heptapeptide derived from Melanotan II. It differs from Melanotan II by a free carboxylic-acid C-terminus in place of the amide, and is studied as a melanocortin-receptor agonist with activity at MC4R and MC3R.
Researchers use PT-141 as a reference ligand in melanocortin-receptor binding and cAMP assays and in studies of central MC4R signalling pathways. Port Peptides PT-141 will be supplied at 10mg as a lyophilised research peptide.
Research applications
- MC3R / MC4R receptor binding and cAMP assays
- Central melanocortin signalling research
- Structure–activity comparisons with Melanotan II
- Hypothalamic neuropeptide pathway models
Mechanism studied
Melanocortin-receptor agonist studied primarily at MC4R and MC3R, with lower melanogenic activity than Melanotan II in laboratory models.
Also known as: Bremelanotide, Ac-Nle-cyclo[Asp-His-D-Phe-Arg-Trp-Lys]-OH, CAS 189691-06-3.
Specifications
| Product | PT-141 (Bremelanotide) |
|---|---|
| SKU | PP-PT141 |
| Molecular formula | C50H68N14O10 |
| Molecular weight | ~1025.2 Da |
| Sequence | Ac-Nle-cyclo[Asp-His-D-Phe-Arg-Trp-Lys]-OH (cyclic heptapeptide) |
| Strengths | 10mg |
| Purity | ≥99% (HPLC) |
| Form | Lyophilised powder in sealed glass vial |
| Storage | −20 °C, sealed, protected from light |
| Availability | Coming soon |
| Intended use | In-vitro laboratory research only |
PT-141 FAQ
When will PT-141 be available?
PT-141 10mg is coming soon. Register your interest by WhatsApp or email to be notified first.
Is Port Peptides PT-141 a medicine?
No. Port Peptides PT-141 is a research reagent for melanocortin-receptor studies only. It is not a licensed medicine in the UK and must not be used on people or animals.
Is PT-141 for human use?
No. It is supplied strictly for in-vitro laboratory research.
How much is UK shipping?
UK shipping is a flat £3.80 and free on orders over £100.
Compliance disclaimer
All Port Peptides products are supplied strictly for in-vitro laboratory research and analytical purposes. They are not intended for human consumption, medical use or veterinary use, and are not drugs, foods, supplements or cosmetics.
Product guidance: we operate exclusively as a research-material supplier and are therefore unable to provide guidance relating to human use, including dosage, administration, preparation or mixing instructions.



