PT-141
PT-141 is a synthetic cyclic heptapeptide and melanocortin-receptor analog, with the molecular formula C50H68N14O10 and a molecular weight of 1025.18 g/mol.
Identity & structure
Verified identifiers, sequence, and analytical properties — every value machine-readable and independently sourceable against PubChem.
Primary sequence · 7 residues · N-terminal Acetyl · lactam bridge (cyclic) D2–K7.
| Identity | |
|---|---|
| CAS | 189691-06-3 |
| PubChem CID | 9941379 |
| FDA UNII | 6Y24O4F92S |
| Also known as | PT 141, PT141, PT 141 peptide, Bremelanotide |
| Research class | Signaling & Neuroactive |
| Structure | |
| Molecular formula | C50H68N14O10 |
| InChIKey | FFHBJDQSGDNCIV-MFVUMRCOSA-N |
| Sequence | cyclic 7-residue |
| Length | 7 residues |
| Analytical | |
| Average molecular weight | 1025.18 g/mol |
| Monoisotopic mass | 1024.5243 Da |
| Form | Lyophilized powder |
| Solubility | Water-soluble |
| Storage | 2–8 °C, desiccated |
Where PT-141 sits in its class
Molecular weight (g/mol) across the 18 characterized compounds in Signaling & Neuroactive. Compare all compounds →
Research context
PT-141 is a synthetic cyclic heptapeptide and melanocortin-receptor analog, with the molecular formula C50H68N14O10 and a molecular weight of 1025.18 g/mol. It is studied in signaling research and is supplied as a characterized reference material, with identity confirmed by mass spectrometry.
Supplied solely as a characterized research material. No representation is made as to any biological effect. For Research Use Only — not for human or veterinary use.
How PT-141 is identified
Identity and purity are measured, not asserted. Electrospray mass spectrometry (ESI-MS) determines the mass-to-charge ratio of the intact molecule — an observed value matching the expected series above confirms the molecular formula. Reversed-phase HPLC separates the sample over time, and purity is read as arithmetic: the target peak’s area as a share of total peak area.
Handling & stability
Physical form, storage, and solubility as supplied. Handling guidance only — no use protocols.
Related compounds
Other compounds in this research class.
Frequently asked questions
What is PT-141?
What is the molecular formula of PT-141?
What is the CAS number of PT-141?
How is the identity of PT-141 confirmed?
How should PT-141 be stored?
Is PT-141 a peptide?
Is PT-141 approved for human use?
Data, tools & certificates
References
- PubChem — compound identity, structure & computed properties (CID 9941379). PubChem →
- CAS Registry Number 189691-06-3.
- FDA Global Substance Registration System — UNII 6Y24O4F92S.
Research professionals only
PT-141 — from the record to the bench
The monograph and every lot certificate stay public. Pricing and ordering open for verified research professionals.