Sable · Question
What is the difference between PT-141 and Cartalax?
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).
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Last verified 2026-10-10
What is the difference between PT-141 and Cartalax?
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 Cartalax?
PT-141 has a molecular weight of about 1025.2 g/mol and Cartalax about 333.29 g/mol (PubChem), so PT-141 is heavier by 691.9 g/mol, a ratio of 3.08. This means 1 mg of PT-141 contains 975.4 nmol versus 3,000.4 nmol for Cartalax.
How many mg of Cartalax 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 Cartalax (MW 333.29) weighs 0.3251 mg. Equimolar comparisons matter when testing two compounds side by side in the same assay.
Compare the molecular formulas of PT-141 and Cartalax
PubChem lists PT-141 as C50H68N14O10 (1025.2 g/mol) and Cartalax as C12H19N3O8 (333.29 g/mol). PT-141 is a cyclic peptide; Cartalax is a peptide. These formulas refer to the parent compounds without salt counter-ions.
A 10 mg vial of Cartalax equals how many mg of PT-141 in moles?
10 mg of Cartalax (MW 333.29) is 30.004 µmol. The same amount of PT-141 (MW 1025.2) would weigh 30.76 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 20 mg vial of Cartalax equals how many mg of PT-141 in moles?
20 mg of Cartalax (MW 333.29) is 60.008 µmol. The same amount of PT-141 (MW 1025.2) would weigh 61.52 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 Cartalax in moles?
10 mg of PT-141 (MW 1025.2) is 9.754 µmol. The same amount of Cartalax (MW 333.29) would weigh 3.251 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 Cartalax in moles?
5 mg of PT-141 (MW 1025.2) is 4.877 µmol. The same amount of Cartalax (MW 333.29) would weigh 1.625 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 Cartalax?. UK Research Peptide Reference. Retrieved 11 October 2026, from https://www.sablepeptides.co.uk/questions/compare/cartalax-vs-pt-141/#sqa-040488
APA
Sable Peptides. (2026, October 11). *What is the difference between PT-141 and Cartalax?*. UK Research Peptide Reference. https://www.sablepeptides.co.uk/questions/compare/cartalax-vs-pt-141/#sqa-040488
BibTeX
@misc{sable_#sqa-040488_2026,
author = {{Sable Peptides}},
title = {{What is the difference between PT-141 and Cartalax?}},
year = {2026},
howpublished = {\url{https://www.sablepeptides.co.uk/questions/compare/cartalax-vs-pt-141/#sqa-040488}},
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