Key highlights
Product specifications
| Compound Class | Synthetic Cyclic Heptapeptide · Melanocortin Receptor Agonist |
|---|---|
| Form | Lyophilized powder in sterile glass vial |
| Quantity | 10 mg per vial |
| CAS Number | 1607799-13-2 |
| Chemical Formula | C50H68N14O10 |
| Molar Mass | 1,025.18 g/mol |
| Half-Life | ~2.7 hours |
| Amino Acid Sequence | Ac-Nle-cyclo[Asp-His-D-Phe-Arg-Trp-Lys]-OH |
| Synonyms | PT-141, Bremelanotide, PT 141 |
| Net Peptide Content | ≥96% (includes stabilizing agents) |
| Verified Purity | Batch-tested to 99.9% (HPLC) |
For laboratory research use only. Not for human or animal consumption.
View certificates of analysisIndependently verified
This peptide is analyzed by an accredited US third-party laboratory before it ships.
Identity and purity confirmed by MZ Biolabs (Tucson, AZ), a US DEA-licensed analytical facility, via HPLC purity analysis and mass-spectrometry identity confirmation under GLP standards.
Our third-party certificates of analysis are published on our website — no login required.
PT-141 (Bremelanotide)99.9% pure
Storage & handling
Peptides are photo- and temperature-sensitive; handle per standard laboratory practice.
- Lyophilized storage: Keep the sealed vial cool, dry, and protected from light. For longer-term storage, freezing is standard practice for lyophilized peptides.
- After reconstitution: Refrigerate (approximately 2–8 °C) and follow your institution’s SOPs for aliquoting, handling, and disposal. Avoid repeated freeze–thaw cycles.
- Diluent not included: A suitable laboratory diluent and reconstitution supplies are not provided with this product.
- UV-resistant glass vial to help protect photo-labile peptides during storage.
- Tamper-evident seal to support chain-of-custody and inventory controls.
Why source PT-141 from Sports Technology Labs
Quality control across the research-peptide industry is inconsistent, and many suppliers do not publish third-party testing for their products. Independent verification of identity and purity is essential for reproducible research.
Verified by MZ Biolabs (Tucson, AZ), an accredited US laboratory, via HPLC and mass spectrometry, with batch-linked COAs.
Freeze-dried into sterile, UV-resistant glass vials and packaged in the USA.
Supports chain-of-custody, label transparency, and batch-linked traceability.
Transparent business, standard payment methods, no misrepresentation.
What is PT-141?
PT-141, also known as bremelanotide, is a synthetic cyclic heptapeptide and a melanocortin receptor agonist. It is structurally related to Melanotan II, being the C-terminal carboxylic-acid analog of that peptide (the sequence terminates in -OH rather than -NH₂).
Mechanistically, it acts as an agonist at the melanocortin receptors, with activity reported primarily at MC4R and additional activity at MC1R and MC3R. It is studied as a research chemical to investigate melanocortin-receptor signaling in experimental models.
PT-141 is supplied here strictly as a research chemical for laboratory research. Sports Technology Labs makes no claims regarding its effects, and nothing in this listing should be interpreted as describing outcomes in humans or animals.
Important regulatory information
This research-grade material is not an approved drug product and is not for human or animal consumption. Although bremelanotide is the active ingredient in an approved prescription medication, this material is supplied solely as a research chemical and is not that product.
Melanocortin receptor agonists such as PT-141 are not currently listed on the World Anti-Doping Agency Prohibited List.
In the United States, PT-141 is not a controlled substance and may be legally purchased and possessed for laboratory research use. Other jurisdictions may regulate it differently.
Sports Technology Labs are chemical suppliers, not medical providers. We do not condone or encourage consumer use of research compounds.
Scientific references
- Al-Obeidi F, Hadley ME, Pettitt BM, Hruby VJ. Design of a new class of superpotent cyclic α-melanotropins based on quenched dynamic simulations. J Am Chem Soc. 1989;111(9):3413–3416.
- National Center for Biotechnology Information. PubChem Compound Summary for Bremelanotide (PT-141): sequence, molecular formula, and molecular weight. PubChem, National Library of Medicine.
Research use only. All products on this website are intended exclusively for laboratory research and development. They are not for human or animal consumption. These statements have not been evaluated by the U.S. Food and Drug Administration, and these products are not intended to diagnose, treat, cure, or prevent any disease.
