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PT-141

PT-141

Original price was: $70.00.Current price is: $50.00.

PT-141 (bremelanotide) is a synthetic cyclic heptapeptide belonging to the melanocortin peptide family. It was derived from the research compound Melanotan II and first described in the early 2000s. The molecule features a lactam bridge — a cyclic bond between amino acid side chains — that constrains it into a ring shape. It has the molecular formula C50H68N14O10, a weight of 1,025.2 g/mol, and CAS number 189691-06-3. Classified as a melanocortin receptor ligand, it is structurally related to compounds in the MC1R through MC5R family. Supplied as a white to off-white lyophilized powder, soluble in water. This product is strictly for research purposes only.

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Proudly Made in the USA
USA manufactured · USA tested · Ships from Gilbert, AZ
USA Manufactured
USA Lab Tested
Ships from Gilbert, AZ
✓ Third-Party Lab Tested

Certificate of Analysis

Independent laboratory testing confirms purity and composition of this research peptide.

Endo Passed

99.940%
Purity
A2926016
Batch
August 2026
Date
View Certificate →

Overview

PT-141, also known as bremelanotide, is a synthetic cyclic heptapeptide — a ring-shaped chain of seven amino acids. It belongs to the melanocortin peptide family and was originally derived from the earlier research compound Melanotan II through metabolic modification. PT-141 was first described in the early 2000s. Its structure includes a lactam bridge — a cyclic bond formed between amino acid side chains — which constrains the molecule into a ring shape, a structural feature common among melanocortin peptides.

The compound has the molecular formula C50H68N14O10, a molecular weight of 1,025.2 g/mol, and a CAS number of 189691-06-3. It is supplied as a white to off-white lyophilized powder that dissolves readily in water. Structurally, PT-141 differs from its parent compound Melanotan II in that it lacks the linear N-terminal extension, making it a smaller, cyclized fragment. It is classified within the melanocortin receptor ligand family (MC1R through MC5R).

This product is strictly for research purposes only. Not approved for human or animal use.

PubChem Reference: View compound profile on NIH PubChem

Key Characteristics

MOLECULAR PROFILE

Formula: C50H68N14O10

Weight: 1025.2 g/mol

CAS: 189691-06-3

Also Known As: Bremelanotide

PHYSICAL PROPERTIES

Form: White to off-white lyophilized powder

Solubility: Readily dissolves in water

Storage: Keep refrigerated 36‑46 °F (2‑8 °C)

Reconstitution: Mix with bacteriostatic water

Weight 0.08 lbs
Dimensions 0.87 × 1.18 × 0.87 in
Size

10mg
SKU: OATH-PT-141 Categories: , Tag:
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