Sable · Question
What is the difference between PT-141 and Matrixyl?
PT-141 is a cyclic heptapeptide melanocortin receptor agonist, a metabolite-like analogue of Melanotan II with a C-terminal acid, used in melanocortin receptor research (cyclic peptide, MW about 1025.2 g/mol).
Research use only. Not for human consumption. No health claims.
Last verified 2026-10-10
What is the difference between PT-141 and Matrixyl?
PT-141 is a cyclic heptapeptide melanocortin receptor agonist, a metabolite-like analogue of Melanotan II with a C-terminal acid, used in melanocortin receptor research (cyclic peptide, MW about 1025.2 g/mol).
Which is heavier, PT-141 or Matrixyl?
PT-141 has a molecular weight of about 1025.2 g/mol and Matrixyl about 802.1 g/mol (PubChem), so PT-141 is heavier by 223.1 g/mol, a ratio of 1.28. This means 1 mg of PT-141 contains 975.4 nmol versus 1,246.7 nmol for Matrixyl.
How many mg of Matrixyl are equimolar to 1 mg of PT-141?
1 mg of PT-141 (MW 1025.2) is 975.4 nmol. The same number of moles of Matrixyl (MW 802.1) weighs 0.7824 mg. Equimolar comparisons matter when testing two compounds side by side in the same assay.
Compare the molecular formulas of PT-141 and Matrixyl
PubChem lists PT-141 as C50H68N14O10 (1025.2 g/mol) and Matrixyl as C39H75N7O10 (802.1 g/mol). PT-141 is a cyclic peptide; Matrixyl is a lipopeptide. These formulas refer to the parent compounds without salt counter-ions.
A 5 mg vial of Matrixyl equals how many mg of PT-141 in moles?
5 mg of Matrixyl (MW 802.1) is 6.234 µmol. The same amount of PT-141 (MW 1025.2) would weigh 6.391 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 10 mg vial of Matrixyl equals how many mg of PT-141 in moles?
10 mg of Matrixyl (MW 802.1) is 12.467 µmol. The same amount of PT-141 (MW 1025.2) would weigh 12.781 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 10 mg vial of PT-141 equals how many mg of Matrixyl in moles?
10 mg of PT-141 (MW 1025.2) is 9.754 µmol. The same amount of Matrixyl (MW 802.1) would weigh 7.824 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 5 mg vial of PT-141 equals how many mg of Matrixyl in moles?
5 mg of PT-141 (MW 1025.2) is 4.877 µmol. The same amount of Matrixyl (MW 802.1) would weigh 3.912 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A CoA for every lot; each vial carries a printed lot number that matches it. Ask with the lot number and we send it.
Cite this
Research use only. Not for consumption. No health claims.
Plain
Sable Peptides. (2026). What is the difference between PT-141 and Matrixyl?. UK Research Peptide Reference. Retrieved 11 October 2026, from https://www.sablepeptides.co.uk/questions/compare/matrixyl-vs-pt-141/#sqa-040492
APA
Sable Peptides. (2026, October 11). *What is the difference between PT-141 and Matrixyl?*. UK Research Peptide Reference. https://www.sablepeptides.co.uk/questions/compare/matrixyl-vs-pt-141/#sqa-040492
BibTeX
@misc{sable_#sqa-040492_2026,
author = {{Sable Peptides}},
title = {{What is the difference between PT-141 and Matrixyl?}},
year = {2026},
howpublished = {\url{https://www.sablepeptides.co.uk/questions/compare/matrixyl-vs-pt-141/#sqa-040492}},
note = {Accessed 11 October 2026. CC BY 4.0}
}Badge
<a href="https://www.sablepeptides.co.uk/ref"><img src="https://www.sablepeptides.co.uk/badge/ref.svg" alt="Data: UK Research Peptide Reference — Sable Peptides" width="220" height="40"></a>
Date modified: 2026-10-10