Technical parameters of the PT-141 peptide:
- Substance name: PT-141 (Bremelanotide)
- Type of compound: synthetic peptide — cyclic heptapeptide analogue of the α-MSH fragment
- Amino acid sequence: Ac–Nle–cyclo[Asp–His–D-Phe–Arg–Trp–Lys]–OH
- Molecular formula: C₅₀H₆₈N₁₄O₁₀
- Molecular mass: ~1025.2 g/mol
- CAS number: 189691-06-3
- Physical form: white to off-white lyophilised powder
- Solubility: soluble in aqueous solutions
Product quality
Our product has been tested by a certified Polish laboratory. The results are available in the product gallery.
What does the product packaging contain (PT-141, 40 mg)?
The ordered product will come packaged in a sturdy tube resistant to transport damage, and inside you will find:
- Vial of powder (Mannitol + PT141 acetate 40 mg + 5 mg GHK-Cu)
- Saline vial (3%DMSO) 5 ml
- Atomiser (for spraying a portion of solution onto a laboratory glass slide)
- Funnel (helps pour solvent into the peptide vial)
It is worth noting that the lyophilised powder will be blue-white in colour due to the presence of the GHK-Cu peptide. The volume of powder in the vial may appear small, but this does not affect the peptide content measured in milligrams.
The safety data sheet (SDS) for this product can be downloaded
How to prepare a solution for laboratory testing?
- unscrew the stoppers from both vials
- Transfer the liquid from the liquid vial to the powder vial
- cap the vial with the powder with the original stopper
- Mix carefully (no sudden movements)
- unscrew the plug, remove the ring from the seal (important to keep it tight) and screw on the atomizer
We obtained 5 ml of solution, which is enough for about 35 atomiser presses of 1.4 mg Pt141 each.
Storage and transportation
In dry form, the peptide can be stored at room temperature away from direct sunlight
In wet form (after the solution has been prepared), the peptide should be refrigerated for up to 40 days at all times.
Research application of the product (Pt-141, 40 mg)
The product is intended for research use only under conditions in vitro, where it can serve as a specialised reagent for molecular, biochemical and cellular analyses concerning the activity and interactions of peptides with the melanocortin system. In laboratory models, it is used for:
- studies on the interactions of PT-141 with selected melanocortin receptors and other components of receptor systems;
- assessment of receptor activity and changes in intracellular signalling pathways in appropriate cell models;
- analyses of expression changes of selected genes, proteins and biological markers in cell cultures;
- conducting comparative research on the activity of PT-141 and other peptide melanocortin receptor ligands;
- support for validation and comparative methods within molecular, biochemical and cellular analyses;
- observation of droplets, sediments and crystalline structures using optical and polarised microscopy;
- analyses of the size and distribution of droplets produced by the atomiser, including by depositing them onto a microscope slide;
- determinations of the size and distribution of aggregates present in solution by dynamic light scattering (DLS);
- conducting UV-Vis spectrophotometric analyses, within a range appropriate for the properties of the tested peptide and the analytical method used.
Disclaimer
The product is not a medicine, food product or dietary supplement. The product is classified as a chemical reagent/reference material authorised in the European Union under the European REACH Act, and can only be used for scientific laboratory research.





