| Test | Method | Limit | Result |
|---|---|---|---|
| Purity | HPLC | ≥ 99.0% | 99.28% |
| Identity | Mass spectrometry | 1025.2 ± 1.0 Da | 1024.9 Da |
| Net content | Quantitative HPLC | ≥ 10 mg | 10.23 mg |
| Endotoxin | LAL assay | ≤ 0.5 EU/mg | 0.12 EU/mg |
| Sterility | Membrane filtration | No growth | No growth |
| Heavy metals | ICP-MS | ≤ 10 ppm total | 0.5 ppm |
| Moisture | Karl Fischer | ≤ 8.0% | 3.0% |
Cyclic heptapeptide melanocortin (MC3R / MC4R) agonist
C50H68N14O10
1025.18 Da · 7 residues
Melanocortin · Cyclic heptapeptide melanocortin (MC3R / MC4R) agonist
10 mg · 7 residues · 1025.18 Da
Size$4.50/mg
Quantity10+ of one compound: 40% off
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For in-vitro research use only. Not for human or animal use.
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BPC-157 / TB-500 20 mg01Verified test results
PT-141 lot SA-P14-2610 was tested Oct 8, 2026 at an independent laboratory before it shipped. Every value is printed against its limit, so a pass means something.
Certificate of analysis
99.28%
Purity by HPLC
Profile drawn from the reported purity
Purity by HPLC, identity by mass spectrometry, net content by quantitative HPLC, endotoxin by LAL, sterility by membrane filtration, heavy metals by ICP-MS and moisture by Karl Fischer. Report SA-P14-2610-01, Oct 8, 2026. Open the lot record.
Open any lot's certificate. Your order ships from the current released lot, and its QR code opens this record.
99.28%
HPLC purity
Tested Oct 8, 2026 · 7/7 assays · sample
99.68%
HPLC purity
Tested Sep 10, 2026 · 7/7 assays · sample
02Verify your vial
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03Analytical identity
Studied in melanocortin-receptor signalling models in vitro.
| Compound | Cyclic heptapeptide melanocortin (MC3R / MC4R) agonist |
|---|---|
| Formula | C50H68N14O10 |
| Molecular weight | 1025.18 Da |
| Residues | 7 |
| Form | Lyophilised powder, 10 mg |
| Storage | Sealed at -20 °C, away from light and moisture |
Sequence
Side-chain composition
04In the lab
PT-141 (bremelanotide) is a cyclic alpha-MSH analog that activates several melanocortin receptor subtypes, with MC4R the most discussed. Lab work links it to dopamine release in the hypothalamus and to MC3/MC4-dependent survivin loss in glioblastoma cells.
Compound
PT-141Cyclic peptide analog of alpha-MSHMedial preoptic neurons
Endpoint studied
Reviewed lab work points to presynaptic MC4R on medial preoptic neurons raising dopamine release.
Pfaus 2022 · PMID 33455598Glioblastoma cells
Endpoint studied
Less survivin and more cell death, both canceled by an MC3/MC4 antagonist; normal human cells were spared.
Suzuki 2024 · PMID 39197897Pathways as reported in the cited laboratory studies. For in-vitro research use only.
05Research history
5 milestones, each linked to its PubMed record
The Journal of Sexual Medicine
A review of lab work maps its action to the medial preoptic area of the brain.
PubMed · PMID 17958619CNS Spectrums
A review: PT-141 activates several melanocortin receptors; presynaptic MC4R in the medial preoptic area may raise dopamine release.
PubMed · PMID 33455598Anticancer Research
Survivin falls and glioblastoma cells die, effects canceled by blocking MC3 and MC4 receptors.
PubMed · PMID 39197897Neuropharmacology
MC3R and MC4R mRNA sit mostly in VTA dopamine neurons; PT-141 did not change their expression.
PubMed · PMID 39793696Analytical Methods
Stress testing finds eight degradation products, formed by deacetylation, peptide-bond hydrolysis, oxidation and epimerization.
PubMed · PMID 42485063 LatestLaboratory research only, cited for research context. Not a claim about use in people.
06Questions
About PT-141, its certificate and your order.
Email [email protected], Monday to Friday. A person replies within one business day.
The current released lot, SA-P14-2610. Scan the QR code on the vial label to open its certificate. The lot number is also on your packing slip, and the full certificate is here.
Every certificate is issued by an independent laboratory. Each lot has its own public record page with every assay value, and a link to verify the report on the lab's own site once the signed PDF is posted.
Vials are filled slightly over the labelled mass so that every vial meets it. Net content is measured on each lot and published as a number, not a pass.
Email [email protected] within 7 days with your order number and a photo and we will replace it.
Orders by 2 PM ET on a weekday ship the same day, with tracking emailed when the label prints.
No. It is sold strictly for in-vitro laboratory research and is not for human or animal use of any kind.
07Complete the box
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