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PT-141:
A Research
Overview

Omni Peptides · Updated 18 July 2026

PT-141, also known as bremelanotide, is a synthetic cyclic peptide and a metabolite of Melanotan 2, described as an agonist at melanocortin receptors. It is used as a research tool for studying central melanocortin pathways. It holds no marketing authorisation. Supplied for research use only.

What PT-141 is

PT-141, also known as bremelanotide, is a synthetic cyclic peptide described in the literature as an agonist at melanocortin receptors. It is structurally related to — and a metabolite of — Melanotan 2, which is why the two are so often studied together.

It is supplied as a lyophilised powder for laboratory research.

Background

PT-141 arose from the same body of melanocortin research as Melanotan 2. Where much of the interest in the melanocortin system had centred on peripheral receptors, PT-141 is studied as a tool for examining central melanocortin pathways — signalling within the central nervous system.

It is supplied strictly as a laboratory reference material for research use. It holds no marketing authorisation, and no claim is made regarding any effect in humans.

Areas of research interest

Laboratory research involving PT-141 centres on the melanocortin system:

These are areas of receptor research, not effects established in humans.

Research context

PT-141 and Melanotan 2 are the two melanocortin compounds in our range and are frequently examined side by side. The product listing gives the specification and batch certificate.

Frequently Asked Questions

What is PT-141?

PT-141 (bremelanotide) is a synthetic cyclic peptide described as an agonist at melanocortin receptors. It is structurally related to, and a metabolite of, Melanotan 2. It is supplied as a lyophilised powder for laboratory research use only.

How is PT-141 related to Melanotan 2?

PT-141 is both structurally related to Melanotan 2 and a metabolite of it. The two arose from the same melanocortin research and are frequently studied together.

Is PT-141 a licensed product?

PT-141 is supplied strictly as a laboratory reference material for research use only. It holds no marketing authorisation, and no claim is made regarding any effect in humans.

Related

Guide
What 'Research Use Only' Means in the UK
Guide
How To Read a Peptide Certificate of Analysis
Product
PT-141 10mg
Product
Melanotan 2 10mg

Important: This article is general scientific and regulatory information. It is not medical, clinical or legal advice, and it is not guidance on using any compound in a person. All products supplied by Omni Peptides are for laboratory research use only and are not for human or veterinary consumption. Read our full Research Use Disclaimer.