Sable · Question
What is the difference between GHK-Cu and SS-31?
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).
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Last verified 2026-10-10
What is the difference between GHK-Cu and SS-31?
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 SS-31?
GHK-Cu has a molecular weight of about 402.92 g/mol and SS-31 about 639.8 g/mol (PubChem), so SS-31 is heavier by 236.9 g/mol, a ratio of 1.59. This means 1 mg of GHK-Cu contains 2,481.9 nmol versus 1,563 nmol for SS-31.
How many mg of SS-31 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 SS-31 (MW 639.8) weighs 1.588 mg. Equimolar comparisons matter when testing two compounds side by side in the same assay.
Compare the molecular formulas of GHK-Cu and SS-31
PubChem lists GHK-Cu as C14H23CuN6O4+ (402.92 g/mol) and SS-31 as C32H49N9O5 (639.8 g/mol). GHK-Cu is a peptide-copper complex; SS-31 is a peptide. These formulas refer to the parent compounds without salt counter-ions.
A 5 mg vial of GHK-Cu equals how many mg of SS-31 in moles?
5 mg of GHK-Cu (MW 402.92) is 12.409 µmol. The same amount of SS-31 (MW 639.8) would weigh 7.94 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 SS-31 in moles?
50 mg of GHK-Cu (MW 402.92) is 124.1 µmol. The same amount of SS-31 (MW 639.8) would weigh 79.395 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 SS-31 in moles?
10 mg of GHK-Cu (MW 402.92) is 24.819 µmol. The same amount of SS-31 (MW 639.8) would weigh 15.879 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 SS-31 in moles?
20 mg of GHK-Cu (MW 402.92) is 49.638 µmol. The same amount of SS-31 (MW 639.8) would weigh 31.758 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 SS-31 in moles?
30 mg of GHK-Cu (MW 402.92) is 74.456 µmol. The same amount of SS-31 (MW 639.8) would weigh 47.637 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 SS-31 in moles?
100 mg of GHK-Cu (MW 402.92) is 248.2 µmol. The same amount of SS-31 (MW 639.8) would weigh 158.8 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 5 mg vial of SS-31 equals how many mg of GHK-Cu in moles?
5 mg of SS-31 (MW 639.8) is 7.815 µmol. The same amount of GHK-Cu (MW 402.92) would weigh 3.149 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 10 mg vial of SS-31 equals how many mg of GHK-Cu in moles?
10 mg of SS-31 (MW 639.8) is 15.63 µmol. The same amount of GHK-Cu (MW 402.92) would weigh 6.298 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 GHK-Cu and SS-31?. UK Research Peptide Reference. Retrieved 11 October 2026, from https://www.sablepeptides.co.uk/questions/compare/ghk-cu-vs-ss-31/#sqa-038914
APA
Sable Peptides. (2026, October 11). *What is the difference between GHK-Cu and SS-31?*. UK Research Peptide Reference. https://www.sablepeptides.co.uk/questions/compare/ghk-cu-vs-ss-31/#sqa-038914
BibTeX
@misc{sable_#sqa-038914_2026,
author = {{Sable Peptides}},
title = {{What is the difference between GHK-Cu and SS-31?}},
year = {2026},
howpublished = {\url{https://www.sablepeptides.co.uk/questions/compare/ghk-cu-vs-ss-31/#sqa-038914}},
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