Products are for research use only, not for human use

Compound research hub

PT-141: Research, Handling and Batch Documentation

PT-141 (bremelanotide) is a synthetic cyclic heptapeptide agonist at the MC3 and MC4 melanocortin receptors, and a metabolite of Melanotan II.

Part of Volta's melanotan peptides.

Identity and specification

Form
Lyophilized powder
Appearance
White to off-white lyophilised powder, typically supplied as the acetate salt
Other known names
Bremelanotide
Compound class
Melanocortin receptor agonist (MC3R / MC4R)
Sequence, three-letter
Phe-Arg-Trp-Lys
CAS number
189691-06-3
Molecular formula
C₅₀H₆₈N₁₄O₁₀
Molecular weight
1,025.2 g/mol
PubChem CID
9941379
Production
Synthetic, by solid-phase peptide synthesis
Solubility
Soluble in sterile water
Shelf life
24 months from date of manufacture

Molecular structure, sequence and the published laboratory studies on PT-141 are in the compound library entry for PT-141 (bremelanotide).

Vial sizes available

Every size of PT-141 Volta lists, in stock or not. Each is a separate catalogue page with its own batch number and specification table.

Purity and batch documentation

Volta's release specification is >99% (HPLC). That is a threshold we set. >99% is the specification every batch is released to. The figure on a certificate is what a laboratory measured for one lot.

No third-party certificate has been published for PT-141yet. The certificates Volta does publish, with the laboratory's own verification link on each, are in the certificate archive.

Research on PT-141

Handling and stability

Regulatory context

More melanotan peptides

PT-141 sits in Volta's melanotan peptides group, alongside the other compounds of the same composition. The whole range is on the full research catalogue, and the library of comparisons and guides is under peptide research.

Research use only. For in-vitro laboratory research by qualified professionals only. Not for human or animal administration. Not a drug, food, cosmetic or dietary supplement. Not intended to diagnose, treat, cure, mitigate or prevent any disease. Volta does not provide dosing, administration or protocol guidance for any material listed. Read the full research disclaimer.

Cluster last reviewed: 2026-09-16.

Your Cart

Your cart is empty

Browse our catalog to add research compounds.