Also grouped under Neuropeptides.
The melanocortin system comprises five G-protein-coupled receptors, MC1R through MC5R, with distinct tissue distributions and downstream effects. Most synthetic…
Read the full description and all 2 compounds →PT-141
Cyclic heptapeptide lactam (bremelanotide); active metabolite of melanotan II and a non-selective melanocortin-receptor agonist with principal activity at MC3R and MC4R. Supplied for receptor-pharmacology research.
Also searched as bremelanotide · PT141
At a glance
PT-141 is cyclic heptapeptide lactam · non-selective melanocortin receptor agonist.
- Supplied as
- Lyophilized (freeze-dried) powder in a sealed vial
- Vial sizes
- 10 mg
- Certificate of analysis
- Testing in progress - certificate published on arrival
- Ships
- From Texas to all 50 US states
- Intended use
- Laboratory research only. Not for human or veterinary use.
Chemical data
Handling & verification
PT-141 (bremelanotide) is a cyclic heptapeptide analogue of α-melanocyte-stimulating hormone, and a metabolite of the earlier compound melanotan-II. It is supplied as a reference compound for in vitro work on melanocortin receptor signalling, and ships as a white lyophilized powder.
Presentation and storage
Supplied lyophilized in a sealed vial. Store the sealed vial at −20 °C for long-term storage; refrigeration at 2–8 °C is adequate over shorter periods. Keep away from light and moisture.
Allow the vial to reach room temperature before opening, so atmospheric moisture does not condense onto the cake.
Reconstitution
Reconstitute with bacteriostatic water. Direct the stream down the inside wall of the vial rather than onto the cake, then let it stand and swirl gently — do not shake, as agitation can denature the peptide.
- 10 mg vial in 1 mL diluent gives a 10 mg/mL stock
- 10 mg vial in 2 mL diluent gives a 5 mg/mL stock
- 10 mg vial in 5 mL diluent gives a 2 mg/mL stock
Once reconstituted, store at 2–8 °C and protect from light. Avoid repeated freeze-thaw cycles — aliquot the stock if it will be drawn on more than a few times. Our reconstitution calculator works out any other combination.
Verification
Testing in progress – certificate published on arrival.
Common questions
Does PT-141 come with a certificate of analysis?
Not yet. Testing in progress - certificate published on arrival.
What purity is PT-141?
Testing in progress - certificate published on arrival. When the certificate for the shipping lot is issued it states the measured figure, the detection wavelength and the method used, so the number can be checked rather than taken on trust.
How is PT-141 supplied and where does it ship?
It is supplied as lyophilized (freeze-dried) powder in a sealed vial, protected against light and impact. Full US shipping, operating from Texas. Delivery estimates are provided by the carrier at checkout.
Do you ship PT-141 near me?
Yes — anywhere in the United States. PT-141 ships to any address in all 50 states and Washington DC from our Texas base. There is no storefront and no local pickup, so there is no branch to visit nearby: every order travels by carrier to the address entered at checkout, where the available shipping options are shown. We ship within the United States only and do not ship internationally. Supplied for laboratory research use only.
How should PT-141 be stored?
Keep the lyophilized vial cold and dark — refrigerated for near-term use, frozen for longer storage. Once reconstituted it belongs in the refrigerator and its usable life is measured in weeks rather than months. Aliquot rather than thawing the same vial repeatedly, because freeze-thaw cycles cost more stability than most people expect.
How do I reconstitute PT-141?
Add bacteriostatic water slowly down the inner wall of the vial so the stream does not strike the powder directly, then let it dissolve on its own — swirl gently if needed, never shake. The volume you add sets the concentration, so decide the concentration first and work backwards. Our free reconstitution calculator does that arithmetic and gives the volume to draw per aliquot.
Is PT-141 for human use?
No. PT-141 is supplied strictly as a reference material for laboratory research use only. It is not a drug, food, cosmetic or medical device, it is not for human or veterinary consumption, and it is not intended to diagnose, treat, cure or prevent any disease. We do not provide dosing guidance or protocols of any kind.
Certificates of analysis · Reconstitution calculator · All questions
Handling guides
Other compounds
For laboratory and research use only. Not for human or veterinary use, diagnosis, or consumption. Products are sold to qualified researchers and are not drugs, foods, or cosmetics.