Sable · Question
What is the difference between Melanotan I and Cartalax?
Melanotan I is a linear 13-residue alpha-MSH analogue used in melanocortin-1 receptor research (peptide, MW about 1646.8 g/mol).
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Last verified 2026-10-10
What is the difference between Melanotan I and Cartalax?
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 Cartalax?
Melanotan I has a molecular weight of about 1646.8 g/mol and Cartalax about 333.29 g/mol (PubChem), so Melanotan I is heavier by 1,313.5 g/mol, a ratio of 4.94. This means 1 mg of Melanotan I contains 607.2 nmol versus 3,000.4 nmol for Cartalax.
How many mg of Cartalax 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 Cartalax (MW 333.29) weighs 0.2024 mg. Equimolar comparisons matter when testing two compounds side by side in the same assay.
Compare the molecular formulas of Melanotan I and Cartalax
PubChem lists Melanotan I as C78H111N21O19 (1646.8 g/mol) and Cartalax as C12H19N3O8 (333.29 g/mol). Melanotan I is a peptide; Cartalax is a peptide. These formulas refer to the parent compounds without salt counter-ions.
A 10 mg vial of Cartalax equals how many mg of Melanotan I in moles?
10 mg of Cartalax (MW 333.29) is 30.004 µmol. The same amount of Melanotan I (MW 1646.8) would weigh 49.41 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 10 mg vial of Cartalax equals how many mg of Melanotan II in moles?
10 mg of Cartalax (MW 333.29) is 30.004 µmol. The same amount of Melanotan II (MW 1024.2) would weigh 30.73 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 20 mg vial of Cartalax equals how many mg of Melanotan I in moles?
20 mg of Cartalax (MW 333.29) is 60.008 µmol. The same amount of Melanotan I (MW 1646.8) would weigh 98.821 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 20 mg vial of Cartalax equals how many mg of Melanotan II in moles?
20 mg of Cartalax (MW 333.29) is 60.008 µmol. The same amount of Melanotan II (MW 1024.2) would weigh 61.46 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 5 mg vial of Melanotan I equals how many mg of Cartalax in moles?
5 mg of Melanotan I (MW 1646.8) is 3.036 µmol. The same amount of Cartalax (MW 333.29) would weigh 1.012 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 Cartalax in moles?
10 mg of Melanotan I (MW 1646.8) is 6.072 µmol. The same amount of Cartalax (MW 333.29) would weigh 2.024 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 Cartalax?. UK Research Peptide Reference. Retrieved 11 October 2026, from https://www.sablepeptides.co.uk/questions/compare/cartalax-vs-melanotan-i/#sqa-040132
APA
Sable Peptides. (2026, October 11). *What is the difference between Melanotan I and Cartalax?*. UK Research Peptide Reference. https://www.sablepeptides.co.uk/questions/compare/cartalax-vs-melanotan-i/#sqa-040132
BibTeX
@misc{sable_#sqa-040132_2026,
author = {{Sable Peptides}},
title = {{What is the difference between Melanotan I and Cartalax?}},
year = {2026},
howpublished = {\url{https://www.sablepeptides.co.uk/questions/compare/cartalax-vs-melanotan-i/#sqa-040132}},
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