PT-141 (Bremelanotide)10mg research peptide · Canada
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- Ships from Vancouver — no customs, no duties
- Dispatched in 1–2 business days · tracked & insured
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Key facts
- Compound:
- PT-141 (Bremelanotide)
- Purity:
- ≥99%, verified by HPLC
- Tested by:
- independent third-party lab (HPLC purity and measured content)
- CAS number:
- 189691-06-3
- Molecular weight:
- 1025.2 g/mol
- Certificate of analysis:
- available on request · members-only lab results
- Ships from:
- Vancouver, BC — typically 2–5 business days, tracked and insured, no customs
- Intended use:
- in vitro laboratory research only — not for human or veterinary consumption
Page last updated
PT-141, also called bremelanotide, is a lab-made peptide that acts on melanocortin receptors in the brain. It comes as a freeze-dried powder in a 10 mg vial.
PT-141 (Bremelanotide) for reproductive-axis research, shipped Canada-wide from Vancouver. One 10 mg vial, ≥99% purity, CAS 189691-06-3, molecular weight 1025.2 g/mol. Tested by an independent lab for purity and content (HPLC), and the lab report (COA) for your batch is available on request. Tracked, insured delivery across Canada — by Canada Post Xpresspost, usually 1 to 4 business days, with no customs step and no brokerage fee.
Sold as a laboratory research material only, for in vitro use. It isn’t a medicine and isn’t meant for people or animals.
Primary literature
- FDA approval of Vyleesi (bremelanotide) for hypoactive sexual desire disorder in premenopausal women — U.S. Food and Drug Administration, 2019
Regulatory record for the pharmaceutical form. Research-grade material is not the approved product.
Cited for research context. A citation is not a claim that this compound is safe, effective, or approved for any use.
Research Use Only. This compound is a laboratory material for in vitro research. It is not a medicine and is not for human or veterinary use. If you’re looking for help with your health, please speak with a doctor or pharmacist.
New to research compounds? Start here. Buying in Canada: why domestic means no customs. Checking quality: how to read a COA.
What is PT-141? PT-141 at a glance
In short: PT-141 is $44.99 CAD at Popular Peptides Canada, ships from Vancouver with no customs, and usually arrives in 1–4 business days.
- What it is
- PT-141, also called bremelanotide, is a lab-made peptide that acts on melanocortin receptors in the brain. It comes as a freeze-dried powder in a 10 mg vial.
- Price
- $44.99 CAD. Prices are in Canadian dollars, so there’s no exchange-rate surprise.
- Size
- 10mg
- Purity
- ≥99%, tested by an independent lab (HPLC purity and content)
- Ships from
- Vancouver, BC, to anywhere in Canada. It never crosses a border, so there’s no customs and no brokerage fee.
- Delivery
- Dispatched in 1–2 business days by Canada Post Xpresspost, tracked and insured. Usually 1–2 days in BC, 2–3 on the Prairies and to major Ontario and Québec cities, 2–4 in Atlantic Canada.
- Shipping cost
- Free over $300 CAD, otherwise a flat $20.
- Lab report
- Available on request. Lab results are kept in our members-only area.
- Pay with
- Visa, Mastercard, Apple Pay, Google Pay or Interac e-Transfer (an extra 10% off by e-Transfer).
- Sold for
- Laboratory research only. It isn’t a medicine and isn’t meant for people or animals.
New to this? Our plain-language guide explains everything from lab reports to delivery, and our Canada vs imported guide shows why ordering inside Canada is simpler.
PT-141 — compound background
Cyclic heptapeptide, melanocortin receptor agonist
PT-141 is a metabolite of Melanotan II, and its history is an unusually direct case of a side effect becoming the research programme. Melanotan II was developed as a synthetic α-MSH analogue for pigmentation research; an unanticipated effect observed during that work redirected attention to the metabolite, which was then developed separately as bremelanotide.
Solubility & reconstitution
Water-soluble and straightforward to reconstitute. The molecule is cyclic — closed through a lactam bridge rather than a disulfide — which makes it conformationally constrained and notably more rigid than a linear peptide of similar length.
Storage
Sealed at -20 °C, dry and protected from light. Refrigerate at 2–8 °C, protected from light on account of the tryptophan residue.
Commonly worked with for 2–4 weeks at 2–8 °C.
Stability
Worth distinguishing from oxytocin: both are cyclic, but PT-141 closes through a lactam (an amide bond) rather than a disulfide. Amide bonds do not undergo the exchange and scrambling chemistry that dominates oxytocin degradation, so the cyclic structure here is a stability asset rather than a liability.
Reading the Certificate of Analysis
Confirm the mass near 1025.2 Da and check for oxidised (+16 Da) species from the tryptophan. Also confirm the cyclic form: a linear (uncyclised) impurity differs by 18 Da from the cyclised product, since ring closure eliminates a water molecule.
Background and handling information is educational, for in-vitro laboratory research use only — not medical advice, dosing, or usage guidance, and not a description of use in humans or animals.
How much does PT-141 (Bremelanotide) cost in Canada?+
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What sizes of PT-141 (Bremelanotide) are available?+
Is PT-141 (Bremelanotide) third-party tested?+
What purity is PT-141 (Bremelanotide)?+
Is PT-141 (Bremelanotide) intended for human or veterinary use?+
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PT-141 laboratory reference
PT-141 (Bremelanotide) is cyclic heptapeptide, melanocortin receptor agonist. Handling requirements follow from that chemistry rather than from generic peptide guidance — the pages below cover each aspect specifically for this compound.
Lyophilized and reconstituted storage conditions, plus the practical working window.
Diluent selection, dissolution behaviour, and the calculator preset for this compound.
Which solvents work, why, and what abnormal dissolution behaviour indicates.
The specific chemical routes by which this molecule breaks down, and how to limit each.
Which assays are informative for this molecule, and what to actually check on its COA.
Compound-specific bench practices, and the errors most often made with this molecule.
What to inspect on arrival, and which conditions actually warrant rejecting a vial.
Questions specific to this compound — structure, chemistry, and common misconceptions.
PT-141 compared with
Reference content is educational laboratory-handling information for in-vitro research use only — not medical advice, not usage guidance, and not a protocol.