Same-day dispatch · Free express shipping over €200
Research-grade peptides — 99%+ verified purityCOA verified — every batch, independently testedShips within 24 hoursFree express shipping on orders €200+Heavy metal + endotoxin testedSecure checkout — encrypted connection
PT-141

Melanocortin receptor research peptide for controlled laboratory studies.

Dose
10 mg
Batch
268014

PT-141

Bremelanotide — N-acetyl-L-norleucyl-L-alpha-aspartyl-L-histidyl-D-phenylalanyl-L-arginyl-L-tryptophyl-L-lysine (2→7)-lactam

4.8 · 205 researcher reviews

For research purposes only — This compound is not FDA approved. All data presented is from clinical trials for educational reference.

Melanocortin receptor research peptide for controlled laboratory studies.

€5010 mg / vial

Members get 10% off every order, on top of volume pricing — become a member with a free account.

Batch tested
HPLC + LC-MS
Same-day
Dispatch · 1–3 business days
COA included
Batch-traceable
Order quantity

Volume savings are applied automatically at checkout. Larger orders: support@alptide.de

Certificate of Analysis · 268014Current testEU lab
Lab
Janoshik Analytical
Purity
99.948%
Methods
HPLC · LC-MS
Tested
Oct 6, 2026
1 test on fileBatch record →

For laboratory research use only. Not for human consumption.

Compound information

Technical specifications

Molecular profile · PT-141
Type
Peptide
Scientific name
Bremelanotide — N-acetyl-L-norleucyl-L-alpha-aspartyl-L-histidyl-D-phenylalanyl-L-arginyl-L-tryptophyl-L-lysine (2→7)-lactam
Amino acids
7
Sequence
Ac-Nle-cyclo[Asp-His-D-Phe-Arg-Trp-Lys]-OH
Molecular weight
1025.2 g/mol
Formula
C50H68N14O10
CAS
189691-06-3
Origin
Synthetic cyclic heptapeptide analogue of alpha-melanocyte-stimulating hormone (alpha-MSH); not gene-encoded — N-acetylated, built with norleucine and D-phenylalanine and closed by an Asp2→Lys7 side-chain lactam bridge.
Storage requirements
Lyophilized (powder)
-20°C · stable long-term; protect from light and moisture
Reconstituted
2-8°C · use within ~30 days; avoid repeated freeze-thaw cycles
Room temperature
Lyophilized powder tolerates brief ambient exposure during shipping and handling, but sustained storage above 2-8°C once reconstituted promotes hydrolysis and aggregation of the peptide. No compound-specific stability study for PT-141 was located in the fetched literature; the guidance above is standard handling for a lyophilized synthetic peptide, not a literature-derived specification.
Sources & references

Peer-reviewed research

Published research and registered trials involving this compound. Provided for educational reference only — none of it is a claim about this product.

  • Annals of the New York Academy of Sciences
    PT-141: a melanocortin agonist for the treatment of sexual dysfunction
    Molinoff PB, Shadiack AM, Earle D, Diamond LE, Quon CY
    2003DOI: 10.1111/j.1749-6632.2003.tb03167.xPMID: 12851303
  • International Journal of Impotence Research
    Double-blind, placebo-controlled evaluation of the safety, pharmacokinetic properties and pharmacodynamic effects of intranasal PT-141, a melanocortin receptor agonist, in healthy males and patients with mild-to-moderate erectile dysfunction
    Diamond LE, Earle DC, Rosen RC, Willett MS, Molinoff PB
    2004DOI: 10.1038/sj.ijir.3901139PMID: 14963471
  • Proceedings of the National Academy of Sciences of the USA
    Selective facilitation of sexual solicitation in the female rat by a melanocortin receptor agonist
    Pfaus JG, Shadiack A, Van Soest T, Tse M, Molinoff P
    2004DOI: 10.1073/pnas.0400491101PMID: 15226502
  • The Journal of Sexual Medicine
    An effect on the subjective sexual response in premenopausal women with sexual arousal disorder by bremelanotide (PT-141), a melanocortin receptor agonist
    Diamond LE, Earle DC, Heiman JR, Rosen RC, Perelman MA, Harning R
    2006DOI: 10.1111/j.1743-6109.2006.00268.xPMID: 16839319
  • The Journal of Sexual Medicine
    Bremelanotide: an overview of preclinical CNS effects on female sexual function
    Pfaus J, Giuliano F, Gelez H
    2007DOI: 10.1111/j.1743-6109.2007.00610.xPMID: 17958619
  • Women's Health (London)
    Bremelanotide for female sexual dysfunctions in premenopausal women: a randomized, placebo-controlled dose-finding trial
    Clayton AH, Althof SE, Kingsberg S, DeRogatis LR, Kroll R, Goldstein I, Kaminetsky J, Spana C, Lucas J, Jordan R, Portman DJ
    2016DOI: 10.2217/whe-2016-0018PMID: 27181790
  • Obstetrics and Gynecology
    Bremelanotide for the Treatment of Hypoactive Sexual Desire Disorder: Two Randomized Phase 3 Trials
    Kingsberg SA, Clayton AH, Portman D, Williams LA, Krop J, Jordan R, Lucas J, Simon JA
    2019DOI: 10.1097/AOG.0000000000003500PMID: 31599840

More in Melanocortin

MT-II (Melanotan II)

MT-II (Melanotan II)

10 mg / vial

COA verified
(143)

Melanocortin receptor research peptide for controlled laboratory studies.

€45