Verified
Exactly as described
Documentation is what sold me. Independent CoA per batch, clean HPLC traces. Reconstitution behaved exactly as expected. Solid supplier for research use.
Marcus T.Berlin, DE · 16 Jun 2026
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Peptides
Hormone Research
In stockPT-141
HPLC purity 99.4% · View certificate ↗10 mg · ≥99% purity
4.9
Melanocortin research peptide (bremelanotide).
£29.99GBP
£29.99 per vial · Tax calculated at checkout · Free tracked UK & EU shipping over £50
Size 2 options
Bundle & saveVolume discount applied automatically
1
We accept
≥99% purity
3rd-party HPLC
CoA per batch
Fast UK shipping
Quality guarantee
Every batch is independently HPLC assayed. Certificate of Analysis available on request.
Every UK order includes — free
- ✓Batch certificate of analysis (HPLC)
- ✓Discreet, unbranded packaging
- ✓Tracked delivery — free on orders over £50
Full refund
if a batch is off-spec
Free reship
if lost or damaged in transit
Same-day dispatch
Mon–Fri, order before 12:00 UK
Research use only
for laboratory work
Analytical data
Specifications, documented.
Identity data cross-checked against PubChem; purity taken from the batch certificate of analysis.
CompoundPT-141
Also known asBremelanotide
Molecular formulaC₅₀H₆₈N₁₄O₁₀
Molecular weight1025.18 g/mol
CAS number189691-06-3
PubChem CID9941379
Purity (HPLC)99.4% — batch certificate of analysis
FormLyophilised powder, sealed glass vial
SolubilityBacteriostatic or sterile water
Storage−20 °C lyophilised, protected from light
About this compound
PT-141
Melanocortin-analogue heptapeptide
First disclosed
2004
PT-141 is a cyclic heptapeptide and the active metabolite of Melanotan II, with a stronger preference for the MC4 receptor. It is widely used as a tool compound for probing central melanocortin signalling.
Preferential MC4R agonism is studied in vitro for melanocortin-4 receptor binding and signal transduction.
Research areas
MC4 receptor signallingNeuro-signalling modelsReceptor selectivity studies
Research literature
Research notice: supplied strictly as laboratory research material for in-vitro use. Not for human or veterinary use, and not a medicine, food or cosmetic. This page gives identification and quality information only — no usage instructions or medical advice.
Browse this research area
PT-141 is bremelanotide (PT-141), a synthetic melanocortin receptor agonist, supplied by MyPeptides for laboratory research use only.
PT-141 (bremelanotide, CAS 189691-06-3) is a cyclic heptapeptide melanocortin analogue related to Melanotan II but with a stronger preference for the MC4 receptor. It is widely used as a tool compound for probing central melanocortin signalling.
It is supplied as a 10 mg lyophilised vial and as a nasal-spray solution, so the same compound can be compared across formats.
Store the vial at −20 °C, protected from light. See the neuro-signalling range for Semax, Selank, DSIP and Oxytocin. For laboratory research use only.
PT-141 — frequently asked questions
Straight answers on purity, handling, dispatch and research use.
What is PT-141?
PT-141 is bremelanotide (PT-141), a synthetic melanocortin receptor agonist, supplied by MyPeptides as a lyophilised research vial for laboratory research use only.
What is PT-141 used for in research?
In cited literature, PT-141 is studied in melanocortin-receptor and vascular-signalling research. It is not a medicine and is not intended for human or veterinary use.
What purity is MyPeptides PT-141?
Every batch is third-party HPLC assayed at ≥99% purity. A signed certificate of analysis is available on request after checkout.
How is PT-141 reconstituted and stored?
Ships lyophilised in a sealed borosilicate vial. Store at −20 °C; reconstitute with bacteriostatic or sterile water immediately before in vitro use.
Do you ship PT-141 to the UK and EU?
Yes — tracked Royal Mail and DPD dispatch across the UK and EU, with free shipping on orders over £50. Weekday orders placed before 12:00 UK time ship the same day.
PT-141 reviews
Verified feedback from qualified researchers across the UK & EU.
5.0(6 reviews)
Swipe
Verified
Exactly as described
Documentation is what sold me. Independent CoA per batch, clean HPLC traces. Reconstitution behaved exactly as expected. Solid supplier for research use.
Marcus T.Berlin, DE · 16 Jun 2026
Verified
Professional service end to end
Site was easy to use, checkout was fast, and the product arrived exactly when they said it would. Straightforward, no drama, high quality.
Chloe D.Lyon, FR · 5 May 2026
Verified
Consistent batch to batch
Been using peptides for research for years and MyPeptides is now my go-to. Consistent quality, quick turnaround, real documentation.
Tom C.Bristol, UK · 16 Apr 2026
Verified
Reference-grade quality
Ordered a bundle to save on shipping - all vials arrived in one insulated pack, labels identical batch, CoA covers the lot. Great value.
James H.London, UK · 31 May 2026
Verified
Fast UK shipping
Everything about this feels professional - from the site to the packaging to the paperwork. Purity assay matches what is on the label. Will keep ordering.
Amelia S.Edinburgh, UK · 2 May 2026
Verified
Quality packaging, quick dispatch
Clean product, no discoloration, correct fill. Certificate of analysis was in the box AND emailed. Very straightforward experience.
Isabella G.Lisbon, PT · 5 May 2026
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