Sable · Question
What is the difference between GHK-Cu and Melanotan I?
GHK-Cu is a copper(II) complex of the tripeptide GHK, first identified in human plasma, and widely studied in skin-biology, cosmetic-science and wound-model research (peptide-copper complex, MW about 402.92 g/mol).
Research use only. Not for human consumption. No health claims.
Last verified 2026-10-10
What is the difference between GHK-Cu and Melanotan I?
GHK-Cu is a copper(II) complex of the tripeptide GHK, first identified in human plasma, and widely studied in skin-biology, cosmetic-science and wound-model research (peptide-copper complex, MW about 402.92 g/mol).
Which is heavier, GHK-Cu or Melanotan I?
GHK-Cu has a molecular weight of about 402.92 g/mol and Melanotan I about 1646.8 g/mol (PubChem), so Melanotan I is heavier by 1,243.9 g/mol, a ratio of 4.09. This means 1 mg of GHK-Cu contains 2,481.9 nmol versus 607.2 nmol for Melanotan I.
How many mg of Melanotan I are equimolar to 1 mg of GHK-Cu?
1 mg of GHK-Cu (MW 402.92) is 2,481.9 nmol. The same number of moles of Melanotan I (MW 1646.8) weighs 4.087 mg. Equimolar comparisons matter when testing two compounds side by side in the same assay.
Compare the molecular formulas of GHK-Cu and Melanotan I
PubChem lists GHK-Cu as C14H23CuN6O4+ (402.92 g/mol) and Melanotan I as C78H111N21O19 (1646.8 g/mol). GHK-Cu is a peptide-copper complex; Melanotan I is a peptide. These formulas refer to the parent compounds without salt counter-ions.
What is the difference between GHK-Cu and Melanotan II?
GHK-Cu is a copper(II) complex of the tripeptide GHK, first identified in human plasma, and widely studied in skin-biology, cosmetic-science and wound-model research (peptide-copper complex, MW about 402.92 g/mol).
Which is heavier, GHK-Cu or Melanotan II?
GHK-Cu has a molecular weight of about 402.92 g/mol and Melanotan II about 1024.2 g/mol (PubChem), so Melanotan II is heavier by 621.3 g/mol, a ratio of 2.54. This means 1 mg of GHK-Cu contains 2,481.9 nmol versus 976.4 nmol for Melanotan II.
How many mg of Melanotan II are equimolar to 1 mg of GHK-Cu?
1 mg of GHK-Cu (MW 402.92) is 2,481.9 nmol. The same number of moles of Melanotan II (MW 1024.2) weighs 2.542 mg. Equimolar comparisons matter when testing two compounds side by side in the same assay.
Compare the molecular formulas of GHK-Cu and Melanotan II
PubChem lists GHK-Cu as C14H23CuN6O4+ (402.92 g/mol) and Melanotan II as C50H69N15O9 (1024.2 g/mol). GHK-Cu is a peptide-copper complex; Melanotan II is a cyclic peptide. These formulas refer to the parent compounds without salt counter-ions.
A 5 mg vial of GHK-Cu equals how many mg of Melanotan I in moles?
5 mg of GHK-Cu (MW 402.92) is 12.409 µmol. The same amount of Melanotan I (MW 1646.8) would weigh 20.436 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 5 mg vial of GHK-Cu equals how many mg of Melanotan II in moles?
5 mg of GHK-Cu (MW 402.92) is 12.409 µmol. The same amount of Melanotan II (MW 1024.2) would weigh 12.71 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 50 mg vial of GHK-Cu equals how many mg of Melanotan I in moles?
50 mg of GHK-Cu (MW 402.92) is 124.1 µmol. The same amount of Melanotan I (MW 1646.8) would weigh 204.4 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 50 mg vial of GHK-Cu equals how many mg of Melanotan II in moles?
50 mg of GHK-Cu (MW 402.92) is 124.1 µmol. The same amount of Melanotan II (MW 1024.2) would weigh 127.1 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 10 mg vial of GHK-Cu equals how many mg of Melanotan I in moles?
10 mg of GHK-Cu (MW 402.92) is 24.819 µmol. The same amount of Melanotan I (MW 1646.8) would weigh 40.872 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 10 mg vial of GHK-Cu equals how many mg of Melanotan II in moles?
10 mg of GHK-Cu (MW 402.92) is 24.819 µmol. The same amount of Melanotan II (MW 1024.2) would weigh 25.419 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 20 mg vial of GHK-Cu equals how many mg of Melanotan I in moles?
20 mg of GHK-Cu (MW 402.92) is 49.638 µmol. The same amount of Melanotan I (MW 1646.8) would weigh 81.743 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 20 mg vial of GHK-Cu equals how many mg of Melanotan II in moles?
20 mg of GHK-Cu (MW 402.92) is 49.638 µmol. The same amount of Melanotan II (MW 1024.2) would weigh 50.839 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 30 mg vial of GHK-Cu equals how many mg of Melanotan I in moles?
30 mg of GHK-Cu (MW 402.92) is 74.456 µmol. The same amount of Melanotan I (MW 1646.8) would weigh 122.6 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 30 mg vial of GHK-Cu equals how many mg of Melanotan II in moles?
30 mg of GHK-Cu (MW 402.92) is 74.456 µmol. The same amount of Melanotan II (MW 1024.2) would weigh 76.258 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 100 mg vial of GHK-Cu equals how many mg of Melanotan I in moles?
100 mg of GHK-Cu (MW 402.92) is 248.2 µmol. The same amount of Melanotan I (MW 1646.8) would weigh 408.7 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 100 mg vial of GHK-Cu equals how many mg of Melanotan II in moles?
100 mg of GHK-Cu (MW 402.92) is 248.2 µmol. The same amount of Melanotan II (MW 1024.2) would weigh 254.2 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 GHK-Cu in moles?
5 mg of Melanotan I (MW 1646.8) is 3.036 µmol. The same amount of GHK-Cu (MW 402.92) would weigh 1.223 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 GHK-Cu in moles?
10 mg of Melanotan I (MW 1646.8) is 6.072 µmol. The same amount of GHK-Cu (MW 402.92) would weigh 2.447 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
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Cite this
Research use only. Not for consumption. No health claims.
Plain
Sable Peptides. (2026). What is the difference between GHK-Cu and Melanotan I?. UK Research Peptide Reference. Retrieved 11 October 2026, from https://www.sablepeptides.co.uk/questions/compare/ghk-cu-vs-melanotan-i/#sqa-038890
APA
Sable Peptides. (2026, October 11). *What is the difference between GHK-Cu and Melanotan I?*. UK Research Peptide Reference. https://www.sablepeptides.co.uk/questions/compare/ghk-cu-vs-melanotan-i/#sqa-038890
BibTeX
@misc{sable_#sqa-038890_2026,
author = {{Sable Peptides}},
title = {{What is the difference between GHK-Cu and Melanotan I?}},
year = {2026},
howpublished = {\url{https://www.sablepeptides.co.uk/questions/compare/ghk-cu-vs-melanotan-i/#sqa-038890}},
note = {Accessed 11 October 2026. CC BY 4.0}
}Badge
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Date modified: 2026-10-10