Sable · Question
What is the difference between Melanotan I and Sermorelin?
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 Sermorelin?
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 Sermorelin?
Melanotan I has a molecular weight of about 1646.8 g/mol and Sermorelin about 3357.9 g/mol (PubChem), so Sermorelin is heavier by 1,711.1 g/mol, a ratio of 2.04. This means 1 mg of Melanotan I contains 607.2 nmol versus 297.8 nmol for Sermorelin.
How many mg of Sermorelin 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 Sermorelin (MW 3357.9) weighs 2.039 mg. Equimolar comparisons matter when testing two compounds side by side in the same assay.
Compare the molecular formulas of Melanotan I and Sermorelin
PubChem lists Melanotan I as C78H111N21O19 (1646.8 g/mol) and Sermorelin as C149H246N44O42S (3357.9 g/mol). Melanotan I is a peptide; Sermorelin 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 Sermorelin in moles?
5 mg of Melanotan I (MW 1646.8) is 3.036 µmol. The same amount of Sermorelin (MW 3357.9) would weigh 10.195 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 Sermorelin in moles?
10 mg of Melanotan I (MW 1646.8) is 6.072 µmol. The same amount of Sermorelin (MW 3357.9) would weigh 20.39 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 2 mg vial of Sermorelin equals how many mg of Melanotan I in moles?
2 mg of Sermorelin (MW 3357.9) is 0.5956 µmol. The same amount of Melanotan I (MW 1646.8) would weigh 0.9809 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 5 mg vial of Sermorelin equals how many mg of Melanotan I in moles?
5 mg of Sermorelin (MW 3357.9) is 1.489 µmol. The same amount of Melanotan I (MW 1646.8) would weigh 2.452 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 10 mg vial of Sermorelin equals how many mg of Melanotan I in moles?
10 mg of Sermorelin (MW 3357.9) is 2.978 µmol. The same amount of Melanotan I (MW 1646.8) would weigh 4.904 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 Sermorelin?. UK Research Peptide Reference. Retrieved 11 October 2026, from https://www.sablepeptides.co.uk/questions/compare/melanotan-i-vs-sermorelin/#sqa-040100
APA
Sable Peptides. (2026, October 11). *What is the difference between Melanotan I and Sermorelin?*. UK Research Peptide Reference. https://www.sablepeptides.co.uk/questions/compare/melanotan-i-vs-sermorelin/#sqa-040100
BibTeX
@misc{sable_#sqa-040100_2026,
author = {{Sable Peptides}},
title = {{What is the difference between Melanotan I and Sermorelin?}},
year = {2026},
howpublished = {\url{https://www.sablepeptides.co.uk/questions/compare/melanotan-i-vs-sermorelin/#sqa-040100}},
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