Sable · Question
What is the difference between Melanotan II and Thymosin alpha-1?
Melanotan II is a cyclic heptapeptide alpha-MSH analogue used as a non-selective melanocortin receptor agonist in receptor-pharmacology research (cyclic peptide, MW about 1024.2 g/mol).
Research use only. Not for human consumption. No health claims.
Last verified 2026-10-10
What is the difference between Melanotan II and Thymosin alpha-1?
Melanotan II is a cyclic heptapeptide alpha-MSH analogue used as a non-selective melanocortin receptor agonist in receptor-pharmacology research (cyclic peptide, MW about 1024.2 g/mol).
Which is heavier, Melanotan II or Thymosin alpha-1?
Melanotan II has a molecular weight of about 1024.2 g/mol and Thymosin alpha-1 about 3108.3 g/mol (PubChem), so Thymosin alpha-1 is heavier by 2,084.1 g/mol, a ratio of 3.03. This means 1 mg of Melanotan II contains 976.4 nmol versus 321.7 nmol for Thymosin alpha-1.
How many mg of Thymosin alpha-1 are equimolar to 1 mg of Melanotan II?
1 mg of Melanotan II (MW 1024.2) is 976.4 nmol. The same number of moles of Thymosin alpha-1 (MW 3108.3) weighs 3.035 mg. Equimolar comparisons matter when testing two compounds side by side in the same assay.
Compare the molecular formulas of Melanotan II and Thymosin alpha-1
PubChem lists Melanotan II as C50H69N15O9 (1024.2 g/mol) and Thymosin alpha-1 as C129H215N33O55 (3108.3 g/mol). Melanotan II is a cyclic peptide; Thymosin alpha-1 is a peptide. These formulas refer to the parent compounds without salt counter-ions.
A 10 mg vial of Melanotan II equals how many mg of Thymosin alpha-1 in moles?
10 mg of Melanotan II (MW 1024.2) is 9.764 µmol. The same amount of Thymosin alpha-1 (MW 3108.3) would weigh 30.349 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 5 mg vial of Melanotan II equals how many mg of Thymosin alpha-1 in moles?
5 mg of Melanotan II (MW 1024.2) is 4.882 µmol. The same amount of Thymosin alpha-1 (MW 3108.3) would weigh 15.174 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 5 mg vial of Thymosin alpha-1 equals how many mg of Melanotan II in moles?
5 mg of Thymosin alpha-1 (MW 3108.3) is 1.609 µmol. The same amount of Melanotan II (MW 1024.2) would weigh 1.648 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 10 mg vial of Thymosin alpha-1 equals how many mg of Melanotan II in moles?
10 mg of Thymosin alpha-1 (MW 3108.3) is 3.217 µmol. The same amount of Melanotan II (MW 1024.2) would weigh 3.295 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
More questions about melanotan-ii
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 Melanotan II and Thymosin alpha-1?. UK Research Peptide Reference. Retrieved 11 October 2026, from https://www.sablepeptides.co.uk/questions/compare/melanotan-ii-vs-thymosin-alpha-1/#sqa-040203
APA
Sable Peptides. (2026, October 11). *What is the difference between Melanotan II and Thymosin alpha-1?*. UK Research Peptide Reference. https://www.sablepeptides.co.uk/questions/compare/melanotan-ii-vs-thymosin-alpha-1/#sqa-040203
BibTeX
@misc{sable_#sqa-040203_2026,
author = {{Sable Peptides}},
title = {{What is the difference between Melanotan II and Thymosin alpha-1?}},
year = {2026},
howpublished = {\url{https://www.sablepeptides.co.uk/questions/compare/melanotan-ii-vs-thymosin-alpha-1/#sqa-040203}},
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