Sable · Question
What is the difference between PT-141 and N-Acetyl Epitalon?
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 N-Acetyl Epitalon?
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 N-Acetyl Epitalon?
PT-141 has a molecular weight of about 1025.2 g/mol and N-Acetyl Epitalon about 432.38 g/mol (PubChem), so PT-141 is heavier by 592.8 g/mol, a ratio of 2.37. This means 1 mg of PT-141 contains 975.4 nmol versus 2,312.8 nmol for N-Acetyl Epitalon.
How many mg of N-Acetyl Epitalon 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 N-Acetyl Epitalon (MW 432.38) weighs 0.4218 mg. Equimolar comparisons matter when testing two compounds side by side in the same assay.
Compare the molecular formulas of PT-141 and N-Acetyl Epitalon
PubChem lists PT-141 as C50H68N14O10 (1025.2 g/mol) and N-Acetyl Epitalon as C16H24N4O10 (432.38 g/mol). PT-141 is a cyclic peptide; N-Acetyl Epitalon is a peptide. These formulas refer to the parent compounds without salt counter-ions.
A 10 mg vial of PT-141 equals how many mg of N-Acetyl Epitalon in moles?
10 mg of PT-141 (MW 1025.2) is 9.754 µmol. The same amount of N-Acetyl Epitalon (MW 432.38) would weigh 4.218 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 N-Acetyl Epitalon in moles?
5 mg of PT-141 (MW 1025.2) is 4.877 µmol. The same amount of N-Acetyl Epitalon (MW 432.38) would weigh 2.109 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 N-Acetyl Epitalon?. UK Research Peptide Reference. Retrieved 11 October 2026, from https://www.sablepeptides.co.uk/questions/compare/n-acetyl-epitalon-vs-pt-141/#sqa-040512
APA
Sable Peptides. (2026, October 11). *What is the difference between PT-141 and N-Acetyl Epitalon?*. UK Research Peptide Reference. https://www.sablepeptides.co.uk/questions/compare/n-acetyl-epitalon-vs-pt-141/#sqa-040512
BibTeX
@misc{sable_#sqa-040512_2026,
author = {{Sable Peptides}},
title = {{What is the difference between PT-141 and N-Acetyl Epitalon?}},
year = {2026},
howpublished = {\url{https://www.sablepeptides.co.uk/questions/compare/n-acetyl-epitalon-vs-pt-141/#sqa-040512}},
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