Sable · Question
What is the difference between Oxytocin and PT-141?
Oxytocin is a nonapeptide neurohypophysial hormone with a disulfide bridge, used as a reference agonist in oxytocin receptor and social-neuroscience research (cyclic nonapeptide, MW about 1007.2 g/mol).
Research use only. Not for human consumption. No health claims.
Last verified 2026-10-10
What is the difference between Oxytocin and PT-141?
Oxytocin is a nonapeptide neurohypophysial hormone with a disulfide bridge, used as a reference agonist in oxytocin receptor and social-neuroscience research (cyclic nonapeptide, MW about 1007.2 g/mol).
Which is heavier, Oxytocin or PT-141?
Oxytocin has a molecular weight of about 1007.2 g/mol and PT-141 about 1025.2 g/mol (PubChem), so PT-141 is heavier by 18 g/mol, a ratio of 1.02. This means 1 mg of Oxytocin contains 992.9 nmol versus 975.4 nmol for PT-141.
How many mg of PT-141 are equimolar to 1 mg of Oxytocin?
1 mg of Oxytocin (MW 1007.2) is 992.9 nmol. The same number of moles of PT-141 (MW 1025.2) weighs 1.018 mg. Equimolar comparisons matter when testing two compounds side by side in the same assay.
Compare the molecular formulas of Oxytocin and PT-141
PubChem lists Oxytocin as C43H66N12O12S2 (1007.2 g/mol) and PT-141 as C50H68N14O10 (1025.2 g/mol). Oxytocin is a cyclic nonapeptide; PT-141 is a cyclic peptide. These formulas refer to the parent compounds without salt counter-ions.
A 2 mg vial of Oxytocin equals how many mg of PT-141 in moles?
2 mg of Oxytocin (MW 1007.2) is 1.986 µmol. The same amount of PT-141 (MW 1025.2) would weigh 2.036 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 5 mg vial of Oxytocin equals how many mg of PT-141 in moles?
5 mg of Oxytocin (MW 1007.2) is 4.964 µmol. The same amount of PT-141 (MW 1025.2) would weigh 5.089 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 Oxytocin in moles?
10 mg of PT-141 (MW 1025.2) is 9.754 µmol. The same amount of Oxytocin (MW 1007.2) would weigh 9.824 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 Oxytocin in moles?
5 mg of PT-141 (MW 1025.2) is 4.877 µmol. The same amount of Oxytocin (MW 1007.2) would weigh 4.912 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 Oxytocin and PT-141?. UK Research Peptide Reference. Retrieved 11 October 2026, from https://www.sablepeptides.co.uk/questions/compare/oxytocin-vs-pt-141/#sqa-040349
APA
Sable Peptides. (2026, October 11). *What is the difference between Oxytocin and PT-141?*. UK Research Peptide Reference. https://www.sablepeptides.co.uk/questions/compare/oxytocin-vs-pt-141/#sqa-040349
BibTeX
@misc{sable_#sqa-040349_2026,
author = {{Sable Peptides}},
title = {{What is the difference between Oxytocin and PT-141?}},
year = {2026},
howpublished = {\url{https://www.sablepeptides.co.uk/questions/compare/oxytocin-vs-pt-141/#sqa-040349}},
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