Description
PT-141 10mg is a 10mg vial of PT-141, a melanocortin receptor agonist, supplied as freeze-dried powder. It’s sold for laboratory research only.
PT-141 (bremelanotide) at a glance
PT-141 (bremelanotide) is a cyclic seven-amino-acid peptide derived from melanotan II. It activates melanocortin receptors, mainly MC4R, in the brain.
An injectable form is FDA-approved as Vyleesi for hypoactive sexual desire disorder in premenopausal women.
How PT-141 acts in the lab
PT-141 activates MC4R and MC3R in the hypothalamus, receptors involved in sexual motivation and arousal pathways. It acts on the brain, not on blood flow, which sets it apart from PDE5 inhibitors.
Chemically it’s Melanotan 2 with a free acid where Melanotan 2 has a C-terminal amide.
PT-141 10mg product details
- Compound: PT-141 (bremelanotide)
- CAS number: 189691-06-3
- Molecular formula: C50H68N14O10
- Molar mass: 1,025.2 g/mol
- Structure: cyclic heptapeptide
- Amount: 10mg per vial
- Form: lyophilized (freeze-dried) powder
- Purity: over 99% (HPLC-MS)
- Packaging: vacuum-sealed
- SKU: PP-PT141-10
- Use: laboratory research only
What the research says about PT-141
The RECONNECT phase 3 trials, published in Obstetrics & Gynecology in 2019, were the basis for approval.
Earlier studies looked at it in men.
To read the papers yourself, start with this PubMed search for PT-141.
PT-141 compared with similar compounds
Labs choosing PT-141 10mg usually weigh it against a few close relatives. PT-141 is a melanocortin agonist derived from Melanotan II, acting on MC4 receptors in the brain, while:
- Melanotan II is a cyclic alpha-MSH analog that drives melanin production
- Melanotan I is a linear alpha-MSH analog, more selective for the pigment receptor MC1R
All three act on melanocortin receptors. The difference is selectivity: Melanotan I leans toward the pigment receptor, Melanotan II hits all of them and PT-141 is tuned toward MC4R in the brain. See them all on our skin and tanning peptides page.
PT-141 10mg reconstitution and concentration
Here’s the math for 10mg of powder:
- 1mL of bacteriostatic water gives 10mg/mL
- 2mL of bacteriostatic water gives 5mg/mL
- 3mL of bacteriostatic water gives 3.33mg/mL
Pick the volume that keeps your own calculations simple, then write the concentration and the mixing date on the label.
Most labs use sterile bacteriostatic water, which has 0.9% benzyl alcohol to keep the vial clean between draws. Warm the sealed vial to room temperature, add the water slowly along the glass wall and swirl gently until it’s clear. Never shake it.
Storing PT-141 10mg
Freeze-dried PT-141 10mg handles room temperature fine during shipping, but for anything longer keep it in a freezer at -20°C, away from light. Once mixed, keep it in the fridge at 2 to 8°C and use it within 28 days.
If you keep several vials going at once, store them upright in a closed box so they stay out of the light and don’t get knocked over every time the fridge opens.
PT-141 10mg purity and lab testing
We test PT-141 10mg by HPLC-MS, which pairs liquid chromatography with mass spectrometry. The first part measures purity and the second confirms the molecule is the right one. PT-141 10mg tests at over 99% purity.
Each vial is vacuum-sealed straight after lyophilization, so the powder reaches you dry and protected from air.
If you run a long study, try to keep it on one batch and log the number from the label. It removes one variable from your results.
PT-141 sizes compared
- PT-141 10mg (Bremelanotide) (this page): $40.00, about $4.00 per mg
- PT-141 15mg (Bremelanotide): $50.00, about $3.33 per mg
PT-141 10mg is the smallest size. It’s the one to start with for a pilot run or when you’re testing a new protocol.
Save on PT-141 10mg in bulk
PT-141 10mg comes in packs as well as single vials. Choose the pack size in the Quantity menu, and the discount is applied straight away:
- 1 vial: $40.00
- 2 vials: $72.00, about $36.00 per vial (save 10%)
- 5 vials: $170.00, about $34.00 per vial (save 15%)
- 10 vials: $308.00, about $30.80 per vial (save 23%)
- 15 vials: $444.00, about $29.60 per vial (save 26%)
- 20 vials: $560.00, about $28.00 per vial (save 30%)
At 20 vials you save 30% compared with buying singles. Every vial in a pack is the same 10mg product, from the same stock.
Often ordered with PT-141 10mg
- GHK Basic 50mg (Copper-Free), a copper-free tripeptide
- AHK-Cu Raw Powder (1 Gram), bulk powder for formulation work
- GLOW Blend 50mg (GHK-Cu, TB-500, BPC-157), GHK-Cu, TB-500 and BPC-157 in one vial
- Melanotan II 17mg, a melanocortin agonist
- GHK-Cu Raw Powder (1 Gram), bulk powder for formulation work
Browse the full skin and tanning peptides range, or see every product on our research peptides page.
Common questions about PT-141 10mg
How much is in the PT-141 10mg vial?
10mg of freeze-dried powder. The amount is printed on the label.
How pure is PT-141 10mg?
Over 99% by HPLC-MS. The same test confirms the molecular weight, so it checks identity too.
What do I mix PT-141 10mg with?
Sterile bacteriostatic water is the usual choice. The reconstitution section above shows the concentration for each volume.
How should I store it?
Keep sealed vials in the freezer at -20°C. Once mixed, refrigerate at 2 to 8°C and use within 28 days.
Can PT-141 be used in people or animals?
No. It’s sold for laboratory research only and isn’t approved for human or veterinary use.
Buy PT-141 10mg online
Order PT-141 10mg now for $40.00. It’s in stock, and checkout takes about two minutes. Ordering more? Packs of up to 20 save up to 30%.
Need more for the same project? See the rest of our skin and tanning peptides.
For laboratory research use only. Not for human or veterinary use. These statements have not been evaluated by the FDA.
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