Sable · Question
What is the difference between Melanotan I and Tirzepatide?
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 Tirzepatide?
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 Tirzepatide?
Melanotan I has a molecular weight of about 1646.8 g/mol and Tirzepatide about 4813 g/mol (PubChem), so Tirzepatide is heavier by 3,166.2 g/mol, a ratio of 2.92. This means 1 mg of Melanotan I contains 607.2 nmol versus 207.8 nmol for Tirzepatide.
How many mg of Tirzepatide 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 Tirzepatide (MW 4813) weighs 2.923 mg. Equimolar comparisons matter when testing two compounds side by side in the same assay.
Compare the molecular formulas of Melanotan I and Tirzepatide
PubChem lists Melanotan I as C78H111N21O19 (1646.8 g/mol) and Tirzepatide as C225H348N48O68 (4813 g/mol). Melanotan I is a peptide; Tirzepatide is a peptide (lipidated). These formulas refer to the parent compounds without salt counter-ions.
A 5 mg vial of Melanotan I equals how many mg of Tirzepatide in moles?
5 mg of Melanotan I (MW 1646.8) is 3.036 µmol. The same amount of Tirzepatide (MW 4813) would weigh 14.613 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 Tirzepatide in moles?
10 mg of Melanotan I (MW 1646.8) is 6.072 µmol. The same amount of Tirzepatide (MW 4813) would weigh 29.226 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 20 mg vial of Tirzepatide equals how many mg of Melanotan I in moles?
20 mg of Tirzepatide (MW 4813) is 4.155 µmol. The same amount of Melanotan I (MW 1646.8) would weigh 6.843 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 10 mg vial of Tirzepatide equals how many mg of Melanotan I in moles?
10 mg of Tirzepatide (MW 4813) is 2.078 µmol. The same amount of Melanotan I (MW 1646.8) would weigh 3.422 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 5 mg vial of Tirzepatide equals how many mg of Melanotan I in moles?
5 mg of Tirzepatide (MW 4813) is 1.039 µmol. The same amount of Melanotan I (MW 1646.8) would weigh 1.711 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 30 mg vial of Tirzepatide equals how many mg of Melanotan I in moles?
30 mg of Tirzepatide (MW 4813) is 6.233 µmol. The same amount of Melanotan I (MW 1646.8) would weigh 10.265 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 40 mg vial of Tirzepatide equals how many mg of Melanotan I in moles?
40 mg of Tirzepatide (MW 4813) is 8.311 µmol. The same amount of Melanotan I (MW 1646.8) would weigh 13.686 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 15 mg vial of Tirzepatide equals how many mg of Melanotan I in moles?
15 mg of Tirzepatide (MW 4813) is 3.117 µmol. The same amount of Melanotan I (MW 1646.8) would weigh 5.132 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 60 mg vial of Tirzepatide equals how many mg of Melanotan I in moles?
60 mg of Tirzepatide (MW 4813) is 12.466 µmol. The same amount of Melanotan I (MW 1646.8) would weigh 20.529 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 Tirzepatide?. UK Research Peptide Reference. Retrieved 11 October 2026, from https://www.sablepeptides.co.uk/questions/compare/melanotan-i-vs-tirzepatide/#sqa-040112
APA
Sable Peptides. (2026, October 11). *What is the difference between Melanotan I and Tirzepatide?*. UK Research Peptide Reference. https://www.sablepeptides.co.uk/questions/compare/melanotan-i-vs-tirzepatide/#sqa-040112
BibTeX
@misc{sable_#sqa-040112_2026,
author = {{Sable Peptides}},
title = {{What is the difference between Melanotan I and Tirzepatide?}},
year = {2026},
howpublished = {\url{https://www.sablepeptides.co.uk/questions/compare/melanotan-i-vs-tirzepatide/#sqa-040112}},
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