Sable · Question
What is the difference between GHRP-6 and Melanotan II?
GHRP-6 is one of the earliest synthetic growth hormone secretagogue hexapeptides, used as a ghrelin receptor (GHS-R1a) agonist in endocrine research (peptide, MW about 873 g/mol).
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Last verified 2026-10-10
What is the difference between GHRP-6 and Melanotan II?
GHRP-6 is one of the earliest synthetic growth hormone secretagogue hexapeptides, used as a ghrelin receptor (GHS-R1a) agonist in endocrine research (peptide, MW about 873 g/mol).
Which is heavier, GHRP-6 or Melanotan II?
GHRP-6 has a molecular weight of about 873 g/mol and Melanotan II about 1024.2 g/mol (PubChem), so Melanotan II is heavier by 151.2 g/mol, a ratio of 1.17. This means 1 mg of GHRP-6 contains 1,145.5 nmol versus 976.4 nmol for Melanotan II.
How many mg of Melanotan II are equimolar to 1 mg of GHRP-6?
1 mg of GHRP-6 (MW 873) is 1,145.5 nmol. The same number of moles of Melanotan II (MW 1024.2) weighs 1.173 mg. Equimolar comparisons matter when testing two compounds side by side in the same assay.
Compare the molecular formulas of GHRP-6 and Melanotan II
PubChem lists GHRP-6 as C46H56N12O6 (873 g/mol) and Melanotan II as C50H69N15O9 (1024.2 g/mol). GHRP-6 is a peptide; Melanotan II is a cyclic peptide. These formulas refer to the parent compounds without salt counter-ions.
A 5 mg vial of GHRP-6 equals how many mg of Melanotan II in moles?
5 mg of GHRP-6 (MW 873) is 5.727 µmol. The same amount of Melanotan II (MW 1024.2) would weigh 5.866 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 10 mg vial of GHRP-6 equals how many mg of Melanotan II in moles?
10 mg of GHRP-6 (MW 873) is 11.455 µmol. The same amount of Melanotan II (MW 1024.2) would weigh 11.732 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
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 GHRP-6 and Melanotan II?. UK Research Peptide Reference. Retrieved 11 October 2026, from https://www.sablepeptides.co.uk/questions/compare/ghrp-6-vs-melanotan-ii/#sqa-039160
APA
Sable Peptides. (2026, October 11). *What is the difference between GHRP-6 and Melanotan II?*. UK Research Peptide Reference. https://www.sablepeptides.co.uk/questions/compare/ghrp-6-vs-melanotan-ii/#sqa-039160
BibTeX
@misc{sable_#sqa-039160_2026,
author = {{Sable Peptides}},
title = {{What is the difference between GHRP-6 and Melanotan II?}},
year = {2026},
howpublished = {\url{https://www.sablepeptides.co.uk/questions/compare/ghrp-6-vs-melanotan-ii/#sqa-039160}},
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