
- Independent lab tested
- ≥99.0% purity
- Research use only
PT-141
Cyclic heptapeptide melanocortin receptor ligand (bremelanotide sequence).
Lab data
- CAS
- 189691-06-3
- Formula
- C50H68N14O10
- Mol. weight
- 1025.2 g/mol
- Purity
- ≥99.0% (HPLC)
- Current lot
- ATL-PT1-2610A
- Form
- Lyophilized powder
Certificates of Analysis
One COA per lot. The lot number on your vial matches the report below.
| Lot | Purity | Tested | Laboratory | Report |
|---|---|---|---|---|
| ATL-PT1-2610A | ≥99.0% (HPLC) | — | Independent third-party laboratory | Posting soon · request |
Research overview
PT-141 is a synthetic cyclic heptapeptide closely related to Melanotan II (it carries a C-terminal free acid instead of an amide), studied as a melanocortin MC3/MC4 receptor ligand in receptor-binding research. This research reagent is not a pharmaceutical product and is not a substitute for one.
Sequence
Ac-Nle-cyclo[Asp-His-D-Phe-Arg-Trp-Lys]-OH
Storage and handling
Lyophilized powder. Store at -20 °C for long-term stability; 2–8 °C short term. Protect from light and moisture. Allow the sealed vial to reach room temperature before opening to limit condensation.
Atlas supplies research materials and cannot advise on use. For purity data, storage, shipping or order questions, contact us.
Research use only. For Research Use Only. Not for human or veterinary use. Not for diagnostic or therapeutic use. Not a drug, food, cosmetic or dietary supplement. Not for resale to consumers.










