PT-141 10mg

PT-141 (bremelanotide) is a synthetic cyclic heptapeptide analogue of alpha-MSH that acts as a melanocortin receptor agonist. It is used as a reference compound in receptor-binding research and is supplied as a lyophilised powder in a 10mg vial.

Specifications

• Compound: PT-141 (bremelanotide acetate)
• Sequence: Ac-Nle-cyclo[Asp-His-D-Phe-Arg-Trp-Lys]-OH
• Molecular formula: C50H68N14O10
• Molecular weight: 1025.20 g/mol
• CAS number: 1607799-13-2
• Appearance: White lyophilised powder
• Pack: 10mg in a sealed glass vial
• Storage: Store at 2–8°C, or at −20°C for long-term storage, sealed, dry and away from light

Research context

PT-141 is a metabolite of Melanotan II and binds melanocortin receptors, chiefly MC3R and MC4R. It is used in research on melanocortin receptor pharmacology and central melanocortin signalling, and as a comparison compound for other α-MSH analogues.

Quality and testing

Each batch comes with the manufacturer's certificate of analysis. This batch (certificate 026-P85-TSX) tested at 99.26% purity by HPLC, with identity confirmed by mass spectrometry and a peptide content of 86.3%. The full lab results are shown below, with the certificate to download.

Delivery

Orders ship by Royal Mail: Tracked 48 (£3.99), Tracked 24 (£4.99) or Special Delivery guaranteed by 1pm (£10.99), with free Tracked 48 on UK orders of £100 or more. Mix and match any peptides for bulk savings: 10% off 3 vials, 15% off 5 and 20% off 10.

FAQs

What purity is this batch?
The current batch of PT-141 tested at 99.26% by HPLC, with identity confirmed by mass spectrometry. The full certificate of analysis, number 026-P85-TSX, is shown below and can be downloaded.

Is PT-141 a cyclic peptide?
Yes. Part of its sequence is joined into a ring through a lactam bridge, which makes it more stable than a linear α-MSH fragment.

How should it be stored?
Keep the sealed vial at 2–8°C for short-term storage or at −20°C for long-term storage, away from light and moisture. Let a cold vial reach room temperature before opening it.

Is this the same as PT141?
Yes. PT-141 is also written or searched for as PT141, PT 141, bremelanotide or PT-141 peptide. All of these names refer to this melanocortin agonist.

See more in melanocortin and copper peptides.

For laboratory research use only. Not a medicine. Not for human or veterinary use, and not for use in food, drugs, cosmetics or household products. Sold to qualified researchers who confirm research use at checkout.