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PT-141 Peptide

Acts on melanocortin receptors in the brain, studied in research on sexual-response signaling.
Vial size 5mg Use Peptide Planner

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SKU: PP-PT141-5MG

Made in Canada

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Swab included

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What PT-141 is

Melanocortin peptide, plain

It works on the melanocortin receptor system, a signaling network in the brain.

Studied strictly at the receptor level.

Your body has a set of signaling receptors called the melanocortin system. PT-141 is studied for how it interacts with them.

What it is: a lab-made peptide. (A peptide is a tiny chain of the building blocks your body already uses.) It's related to an earlier pigment-research compound.

What it does: researchers study how it activates certain melanocortin receptors in the brain. That's the mechanism, full stop. It lives on the Performance + Growth shelf, near other receptor-signaling peptides like Melanotan 2.

What it actually does

PT-141 is studied for how it activates the melanocortin receptor system, a signaling network involved in several body processes.

The research is mechanism-level: how it binds those receptors, which subtypes it hits, how the signal propagates. We're describing the pathway researchers examine, not any outcome.

It came out of work on an earlier melanocortin compound, repurposed for studying this receptor family.

The research so far

PT-141 is studied as a melanocortin-receptor agonist in pharmacology research. You can read the full chemical profile on its PubChem entry.

Receptor agonist

Studied for activating melanocortin receptors.

Pathway mapping

How the signal moves through the system.

Research only

We stock it for research. The studies write the conclusions, not us.

A clearly-defined receptor target in melanocortin pharmacology.

PT-141 specs

Compound specification SKU PP-PT-141-5MG
Also known as
Bremelanotide
What it is
Synthetic melanocortin peptide
Molecular formula
C50H68N14O10
Molecular weight
1025.2 g/mol
PubChem CID
9941379
Purity
≥99% HPLC
Format
Freeze-dried powder
Storage
Keep it cold and out of the light

The backstory

PT-141 traces back to research on an earlier melanocortin compound.

  1. Melanocortin origins

    Derived from work on an earlier compound in the same receptor family.

  2. Repurposed for study

    Researchers refocused it on the melanocortin receptor system specifically.

  3. Where it stands

    A defined receptor-pharmacology target. We're not telling you what it does for you, just the pathway studied.

Buying PT-141 in Canada

The short version

Read the COA before you buy, not after

Every batch ships with its Certificate of Analysis, right here on this page. A number on a label means nothing without the paper to back it.

Same-day, packed cold

Order PT-141 in Canada and it's out the door today. Cold chain, domestic shipping.

Freeze-dried 5mg vial

Lyophilized powder, sealed. No ice required for shipping.

Sold for research

Not for human consumption. Nothing on this page is a medical claim.

Pairs with the rest of the shelf

Order it

PT-141, lyophilized, COA on the page

For research use only. A melanocortin-system peptide with a clean Certificate of Analysis right here.

Not for human consumption. Not approved by Health Canada or any other regulatory body. This product is intended for in vitro and laboratory research applications only.

Certificate of Analysis

HPLC verified. The COA ships with every batch.

99.4%
HPLC Purity
✓ COA Verified

Batch PP-PT141-5MG-A

Tested
April 2026
Method
HPLC + Mass Spectrometry
Vial size
10mg lyophilized
Stored at
2 to 8°C, dark

Test results

HPLC verified
HPLC Purity99.4%✓ Pass
Mass spec confirmationConfirmed✓ Pass
Net peptide contentWithin spec✓ Pass
Endotoxin screenBelow detection✓ Pass
Visual inspectionUniform white powder✓ Pass
Every order ships with the COA matching that specific batch. If your source does not provide a COA, that is not a source. That is a mystery box.

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Stuff people ask us

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What is PT-141?
PT-141 (bremelanotide) is a synthetic melanocortin-receptor peptide studied in pharmacology research for how it activates the melanocortin receptor system. Sold as a lyophilized powder for research use only.
What is the molecular weight of PT-141?
PT-141 has a molecular weight of 1025.2 g/mol and the molecular formula C50H68N14O10 (PubChem CID 9941379).
How is the purity verified?
Every batch is tested by HPLC to at least 99% purity, and the Certificate of Analysis for that batch ships with the order and is shown on the product page.
How should it be stored?
Store the lyophilized powder cold and protected from light. Keep it sealed until use to maintain stability.
Does it come with a COA?
Yes. Every batch ships with its Certificate of Analysis, shown right on the product page, so you can confirm purity before you buy.
What does "research use only" mean?
It means this product is intended strictly for laboratory research. It is not for human or animal consumption, and nothing on this page is a medical or therapeutic claim.

Not for human consumption. Not approved by Health Canada. For in vitro research only.