Sable · Question
What is the difference between Melanotan I and Selank?
Melanotan I is a linear 13-residue alpha-MSH analogue used in melanocortin-1 receptor research (peptide, MW about 1646.8 g/mol).
Research use only. Not for human consumption. No health claims.
Last verified 2026-10-10
What is the difference between Melanotan I and Selank?
Melanotan I is a linear 13-residue alpha-MSH analogue used in melanocortin-1 receptor research (peptide, MW about 1646.8 g/mol).
Which is heavier, Melanotan I or Selank?
Melanotan I has a molecular weight of about 1646.8 g/mol and Selank about 751.9 g/mol (PubChem), so Melanotan I is heavier by 894.9 g/mol, a ratio of 2.19. This means 1 mg of Melanotan I contains 607.2 nmol versus 1,330 nmol for Selank.
How many mg of Selank are equimolar to 1 mg of Melanotan I?
1 mg of Melanotan I (MW 1646.8) is 607.2 nmol. The same number of moles of Selank (MW 751.9) weighs 0.4566 mg. Equimolar comparisons matter when testing two compounds side by side in the same assay.
Compare the molecular formulas of Melanotan I and Selank
PubChem lists Melanotan I as C78H111N21O19 (1646.8 g/mol) and Selank as C33H57N11O9 (751.9 g/mol). Melanotan I is a peptide; Selank is a peptide. These formulas refer to the parent compounds without salt counter-ions.
A 5 mg vial of Melanotan I equals how many mg of Selank in moles?
5 mg of Melanotan I (MW 1646.8) is 3.036 µmol. The same amount of Selank (MW 751.9) would weigh 2.283 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 10 mg vial of Melanotan I equals how many mg of Selank in moles?
10 mg of Melanotan I (MW 1646.8) is 6.072 µmol. The same amount of Selank (MW 751.9) would weigh 4.566 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 5 mg vial of Selank equals how many mg of Melanotan I in moles?
5 mg of Selank (MW 751.9) is 6.65 µmol. The same amount of Melanotan I (MW 1646.8) would weigh 10.951 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 10 mg vial of Selank equals how many mg of Melanotan I in moles?
10 mg of Selank (MW 751.9) is 13.3 µmol. The same amount of Melanotan I (MW 1646.8) would weigh 21.902 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
More questions about melanotan-i
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 I and Selank?. UK Research Peptide Reference. Retrieved 11 October 2026, from https://www.sablepeptides.co.uk/questions/compare/melanotan-i-vs-selank/#sqa-040088
APA
Sable Peptides. (2026, October 11). *What is the difference between Melanotan I and Selank?*. UK Research Peptide Reference. https://www.sablepeptides.co.uk/questions/compare/melanotan-i-vs-selank/#sqa-040088
BibTeX
@misc{sable_#sqa-040088_2026,
author = {{Sable Peptides}},
title = {{What is the difference between Melanotan I and Selank?}},
year = {2026},
howpublished = {\url{https://www.sablepeptides.co.uk/questions/compare/melanotan-i-vs-selank/#sqa-040088}},
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