Melanotan Peptides
PT-141 10mg — Research Peptide Canada
PT-141 (bremelanotide) is a cyclic heptapeptide melanocortin agonist active principally at MC3 and MC4 receptors. It is a metabolite of Melanotan II and acts centrally rather than on the vascular periphery.
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- Same-day dispatch before 2 PM PT from British Columbia, Canada
- Free shipping over CA$200
- Batch-specific COA with every lot
- Priced in Canadian dollars
PT-141 10mg specification
Release specification
- Catalogue number
- OP-050
- Purity specification
- >99%
- Fill
- 10mg
Identity and structure
- CAS number
- 189691-06-3
- Molecular formula
- C₅₀H₆₈N₁₄O₁₀
- Molecular weight
- 1,025.2 g/mol
Additional specifications
- Form
- Lyophilized powder
- Solubility
- Soluble in bacteriostatic water
- Shelf Life
- 24 months from date of manufacture
About PT-141 10mg
PT-141 is what Melanotan II becomes after loss of the C-terminal amide, and that single change shifts its selectivity away from MC1R pigmentation activity toward MC3R and MC4R. Because MC4R signalling in the hypothalamus is the pathway involved, its mechanism is central rather than peripheral, which distinguishes it categorically from PDE5 inhibitors. It reached regulatory approval as Vyleesi, giving it a far more complete safety and pharmacokinetic dataset than most compounds in this catalogue. Nausea through the same central pathway is the dose-limiting effect reported across that dataset.
Storing and handling PT-141 10mg
Store lyophilized peptide at -20°C in a dry, dark environment. Reconstitute in bacteriostatic water. Once reconstituted, store at 2-8°C and use within 30 days. Avoid repeated freeze-thaw cycles. Lyophilized powder is stable at room temperature for shipping and short-term storage.
Shipping PT-141 10mg within Canada
Orders placed before 2:00 PM Pacific on a business day are packed and dispatched the same day. Orders placed after that cut-off, or on a weekend or statutory holiday, are dispatched on the next business day. Parcels leave British Columbia, Canada and travel entirely within the country, arriving in two to five business days with a tracking number on every one. Orders over CA$200 ship free; see the shipping page for the dispatch cut-off and transit window.
PT-141 10mg questions
Are research peptides like PT-141 10mg legal in Canada?
PT-141 10mg is supplied here strictly as a reference material for in vitro laboratory research. For laboratory research use only. Not for human or veterinary use. Canadian law turns on what a substance is represented and supplied for, which is why that restriction is on the label, the invoice and every page of this site. The full framework, and what a research-use designation does and does not change, is set out on our legality page.
Is PT-141 10mg shipped from within Canada?
Yes. Every PT-141 10mg order leaves British Columbia, Canada and travels entirely within the country. Orders placed before 2:00 PM Pacific on a business day are packed and dispatched the same day. Orders placed after that cut-off, or on a weekend or statutory holiday, are dispatched on the next business day. Transit after dispatch is 2–5 business days Canada-wide, with a tracking number on every parcel, and orders over CA$200 ship free.
Does PT-141 10mg come with a certificate of analysis?
Yes — the certificate for the lot in your box, not a representative certificate for a different batch. Every PT-141 10mg lot is released against a >99% HPLC specification, and the document carries the lot number, the issuing laboratory and the analytical method. Certificates are not published on this site; if you need another copy, ask us for it by lot number.
How is PT-141 10mg supplied and stored?
As a lyophilised powder in a sealed vial, which is the form that survives shipping without a cold chain. Unopened vials are stored away from light and moisture; the storage and handling page covers the laboratory conditions in full. We publish no dosing, reconstitution volumes or administration guidance of any kind.
What fill is PT-141 10mg supplied in?
PT-141 10mg is supplied in a single 10mg fill, released against a >99% specification.
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