PT-141 Nasal Spray — 10mg

PT-141, also known as Bremelanotide, is a cyclic heptapeptide analog of alpha-melanocyte-stimulating hormone and acts as an agonist at melanocortin receptors.

SHIPPED UNMIXED — AND WHY THAT MATTERS

Durham Peptides does not ship pre-diluted nasal sprays. Peptides in solution are materially less stable than in lyophilized form, so a bottle that is mixed at the warehouse begins degrading the day it is filled and continues to do so in transit and in storage. Instead, the lyophilized peptide and the diluent travel separately and the researcher reconstitutes on arrival — which means undegraded lyophilized material and a known, controlled in-use window rather than an unknown one.

Every nasal spray ships with sterile water preserved with 0.3% potassium sorbate, supplied specifically for this format. No separate bacteriostatic water purchase is required.

FORMAT

• Ships unmixed — stable lyophilized material, not a solution degrading in transit

• Diluent included — sterile water with 0.3% potassium sorbate, no separate purchase needed

• Verified identity — MS-confirmed against a third-party lab report you can check independently

WHAT RESEARCHERS LOOK AT

• Melanocortin receptor subtype selectivity and binding affinity

• Central versus peripheral signalling in preclinical models

• Structure-activity relationships of the cyclic heptapeptide backbone

• Post-reconstitution stability across the in-use window

QUICK SPECS

• Format: Nasal atomiser, supplied unmixed

• Form: Lyophilized peptide powder plus separate sterile diluent

• Net peptide per bottle: 10 mg

• Bottle volume: 10 mL

• Included diluent: Sterile water with 0.3% potassium sorbate

• Purity: ≥99% (HPLC verified)

• Identity: MS-verified (per COA)

• Storage: 2–8°C before and after reconstitution, protect from light

• Reconstitution: Diluent supplied — no separate bacteriostatic water required

IDENTITY BASICS

• Compound: PT-141 (Bremelanotide), CAS 189691-06-3

• Class: Cyclic heptapeptide melanocortin receptor agonist

• Also written as: Bremelanotide, PT 141

WHY CHOOSE DURHAM PEPTIDES FOR NASAL SPRAYS?

• Shipped unmixed for freshness — not pre-diluted at the warehouse

• Sterile diluent included in every bottle

• independently lab-tested with verifiable COA keys

• PT-141 vials also stocked for researchers who prefer custom concentrations

• Same-day shipping across Canada (orders before 4:00 PM EST)

• Free shipping on orders over $200 CAD

• Transparent Canadian pricing, shown above in CAD

DOES THE NASAL SPRAY COME PRE-MIXED?

No, and that is deliberate. Peptides are materially less stable in solution than in lyophilized form, so a pre-diluted bottle starts degrading the day it is filled. Durham Peptides ships the lyophilized peptide and the sterile diluent separately so the researcher reconstitutes on arrival — undegraded material, and a known in-use window rather than an unknown one.

DO I NEED TO BUY BACTERIOSTATIC WATER SEPARATELY?

No. Every nasal spray ships with its own diluent — sterile water preserved with 0.3% potassium sorbate, supplied specifically for the atomiser format. This differs from the lyophilized vials in our catalogue, which are reconstituted with bacteriostatic water sold separately.

WHAT IS PT-141?

PT-141, also called Bremelanotide, is a cyclic heptapeptide analog of alpha-melanocyte-stimulating hormone that acts as an agonist at melanocortin receptors. It is studied in research models for receptor subtype selectivity and downstream signalling.

NASAL SPRAY VS VIAL — WHICH SHOULD I CHOOSE?

Both supply the same research-grade PT-141. The vial — PT-141 (Bremelanotide) — 10mg — is the flexible option, since the researcher chooses the reconstitution volume and therefore the working concentration. The nasal atomiser arrives with matched diluent included.

HOW SHOULD IT BE STORED AFTER RECONSTITUTION?

Keep the bottle refrigerated at 2–8°C and protected from light both before and after reconstitution. Once reconstituted, use within an appropriate research timeframe — a peptide in solution has a materially shorter usable life than the sealed lyophilized material.

HOW IS IT SHIPPED IN CANADA?

Orders placed and paid before 4:00 PM EST ship the same business day via Canada Post Xpresspost with full tracking. Shipping is domestic from within Canada, so there are no customs delays or border holds.

IS THE COA VERIFIABLE?

Yes. Every batch is independently lab-tested with a unique report key you can confirm independently — see our guide on how to verify a lab report key.

• For laboratory research use only.

• Not for human or veterinary use.

• Not intended for diagnosis, treatment, cure, or prevention of any disease.

• Use only in controlled laboratory settings by qualified personnel following appropriate safety procedures.

Volume discounts apply to your whole order, not to a single item. Enter the code at checkout.

• Spend $200 or more — 10% off with code VOLUME10

• Spend $500 or more — 15% off with code VOLUME15

• Spend $1,000 or more — 20% off with code VOLUME20

• Spend $2,000 or more — 25% off with code VOLUME25

The thresholds are worth more than they look. A $499 order costs you $449. Add one more $20 vial to reach $500 and you pay $425 — more product, $24 less. Free shipping over $200.

Ordering at volume? The full catalogue is available at wholesale pricing through a five-tier programme.

• Minimum 10 units per product, any mix of products in one order

• Accounts open at $2,000 per order

• Tiers are set on 12-month volume and move up automatically

• Canadian stock, same-day dispatch, shipping included

Apply at durhampeptides.ca/wholesale and we come back within one business day. Single vials and multi-packs on this page are available to everyone at the prices shown — no account needed.