

PT-141
PT-141 is a synthetic peptide derived from Melanotan II and acts as a melanocortin receptor agonist, particularly at MC3R and MC4R. It is studied in research exploring neuroendocrine pathways, sexual-function signaling, and CNS activity. Shipped in freeze-dried (lyophilized) form; requires reconstitution.
$44.99
Size
Quantity
1
In stock
For research use only. Not for human consumption. By purchasing you confirm you are using this product for lawful laboratory research.
$44.99
Specifications
- Sequence
- Ac-Nle-c[Asp-His-D-Phe-Arg-Trp-Lys]-OH
- Molecular formula
- C50H68N14O10
- Molecular weight
- 1025.2 g/mol
- CAS number
- 189691-06-3
- PubChem CID
- 9941379
- Synonyms
- Bremelanotide, Vyleesi
- Shelf life
- 36 months
- Storage & handling
- Store lyophilized at -20 degrees C, protected from light and moisture; after reconstitution with bacteriostatic water, store at 2-8 degrees C.
Certificate of Analysis
- COA (PDF)Batch PT141-2026-001Current
Issued May 15, 2026
Every batch is documented with its own Certificate of Analysis.
What every COA covers
- Identity confirmed by mass spectrometry (MS)
- Purity measured by high-performance liquid chromatography (HPLC)
- Batch / lot number, issue date, and storage guidance
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