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Research Use Only — Not for Human Consumption. This compound is sold exclusively for in vitro laboratory research by qualified professionals.

PeptaPeptides
PT-141
10 mg
99.4% PurityFor Research Use Only
RUO — Research Use Only
Not for human, veterinary, or clinical use
RUO
Melanocortin

PT-141

Bremelanotide

(398 reviews)
99.4% Purity
$79.99per 10 mg · lyophilized

PT-141 (Bremelanotide) is a cyclic lactam analogue of alpha-MSH acting as an agonist at melanocortin receptor subtypes MC3R and MC4R expressed in hypothalamic regions. Research examining melanocortin receptor subtypes and central regulatory circuits has utilized PT-141 as a reference agonist. For research use only — not for human consumption.

3rd-Party HPLC Verified
Lot-Specific Certificate
Cold-Chain Shipping
Chemical Information
Molecular FormulaC₅₀H₆₈N₁₄O₁₀
Molecular Weight1025.17 g/mol
CAS Number189691-06-3
FormLyophilized Powder
Storage-20°C, dry & dark
Purity (HPLC)≥ 99.4%
Amino Acid SequenceAc-Nle-cyclo[Asp-His-D-Phe-Arg-Trp-Lys]-OH
1
12 in stock — limited
Not for Human Consumption · For Research Purposes Only
256-bit SSL
Cold-Chain Shipping
Lot-Specific CoA
ISO 9001 Facility
Independent Verification

Third-Party Tested. Every Lot.

Every batch of PT-141 undergoes independent HPLC and mass spectrometry analysis through an accredited third-party laboratory before it is released for sale. No exceptions. No internal-only certificates.

RP-HPLC Analysis

Every lot measured by reverse-phase HPLC. PT-141 consistently achieves 99.4%+ purity across batches.

ESI Mass Spec

Electrospray ionization mass spectrometry confirms exact molecular weight and rules out structural isomers or impurities.

Lot-Specific CoA

Your Certificate of Analysis references your exact lot number with actual chromatogram data — not a generic template.

Research Context

Theoretical Research Analysis

All research information below reflects published preclinical literature only. This product is not for human use, consumption, or clinical application of any kind.

MC3R/MC4R receptor binding studies
Hypothalamic melanocortin pathway research
Cyclic peptide pharmacology
Central vs. peripheral mechanism differentiation

PT-141 has been widely employed as a pharmacological probe in melanocortin receptor research with binding affinities characterized across all five MC receptor subtypes.

Sequence Information

Amino acid sequence:

Ac-Nle-cyclo[Asp-His-D-Phe-Arg-Trp-Lys]-OH

Molecular Formula

C₅₀H₆₈N₁₄O₁₀

Molecular Weight

1025.17 g/mol

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FDA Disclaimer: The information and statements contained on this website have not been evaluated by the United States Food and Drug Administration. The products offered by PeptaPeptides LLC and the statements made herein are not intended to diagnose, treat, cure, or prevent any disease or medical condition. PeptaPeptides LLC functions solely as a chemical supplier and raw material provider. PeptaPeptides LLC is not a compounding pharmacy, nor does it constitute a chemical compounding facility as that term is defined under Section 503A of the Federal Food, Drug, and Cosmetic Act. PeptaPeptides LLC is likewise not an outsourcing facility as defined under Section 503B of the Federal Food, Drug, and Cosmetic Act. All compounds and materials offered are provided exclusively for laboratory research, scientific analysis, and in vitro use by qualified researchers and institutions. None of the products available through PeptaPeptides LLC are intended for, approved for, or suitable for human consumption in any form.