Also known as: PT141, bremelanotide
Neurological research
≥99% HPLC
Sizes available: 5 mg – 10 mg
Physician-reviewed
- Independent laboratory Freedom Diagnostics
- Lowest published purity 99.01%
- Published certificates 43
- Content weighed, not claimed 36
- Verifiable with the lab's key 43
Documented research areas
- Melanocortin pathway
- MC4R signalling
- CNS research
PT-141 (Bremelanotide) specifications
| Property | Specification |
|---|---|
| Classification | Melanocortin receptor agonist, cyclic heptapeptide |
| Also known as | PT141, bremelanotide |
| Purity | ≥99% HPLC |
| CAS number | 189691-06-3 |
| Molecular formula | C50H68N14O10 |
| Molecular weight | 1025.2 g/mol |
| Vial sizes available | 5 mg, 10 mg |
| Intended use | Supplied after physician review — not an approved medicine |
| Physical form | Lyophilised powder |
| Storage | -20 °C, protected from light |
| Reconstitution | Bacteriostatic water · 10 ml bottle, included at no charge (one per vial) |
| Testing | HPLC + mass spectrometry, per batch |
| Dispatch | Sealed box, tracked, from Argentina or the United States — no cold chain needed |
Published lab reports
The third-party analysis behind this compound, published as the laboratory issued it — their letterhead, their report number, their key.
Open the full certificate
PT-141
Report #2606110695- Purity
- 99.94%
- Content found
- 11.81 mg
- Laboratory
- Freedom Diagnostics
against a 10 mg label
Jun 15, 2026
Checked with this key on Freedom Diagnostics's own verification page: JAGB2606110695
Open Freedom Diagnostics's verification pageEach report covers the batch submitted for it and no other. It is evidence about that material rather than a guarantee about every vial ever shipped, which is why these are dated, numbered and published one at a time instead of summarised into a badge.
Take the certificates with you
Each report as a PDF, the whole page exactly as the laboratory issued it. For a purchasing file, a colleague, or a batch record.
-
Download PDF
PT-141 99.94%
Report #2606110695 · Freedom Diagnostics · PDF
Certificate of analysis
The CoA for the specific batch you would receive is reviewed during your consultation and ships with the material.
Request this batch CoAFrequently asked questions
How do I know a lot is what it claims to be?
From that lot's certificate of analysis, not from what the supplier asserts. The certificate names the laboratory that took the measurement, the date, the task number, the method and the purity found. PeptoClinic publishes the full reports uncropped, exactly as the laboratory printed them.
What is a certificate of analysis and how do you read one?
It is the report an analytical laboratory issues on a specific sample. Four things are worth checking: which compound it claims to have measured, by what method (HPLC for purity, mass spectrometry for identity), what figure it found, and whether the task number can be verified against the laboratory. A certificate with no verifiable task number is a picture.
People also ask about
Supplied after physician review — not an approved medicine