Sable · Question
What is the difference between Pal-GHK and P21?
Pal-GHK is a palmitoylated form of the GHK tripeptide used in cosmetic-science and fibroblast-culture research (lipopeptide, MW about 578.8 g/mol).
Research use only. Not for human consumption. No health claims.
Last verified 2026-10-10
What is the difference between Pal-GHK and P21?
Pal-GHK is a palmitoylated form of the GHK tripeptide used in cosmetic-science and fibroblast-culture research (lipopeptide, MW about 578.8 g/mol).
Which is heavier, Pal-GHK or P21?
Pal-GHK has a molecular weight of about 578.8 g/mol and P21 about 578.7 g/mol (PubChem), so Pal-GHK is heavier by 0.1 g/mol, a ratio of 1. This means 1 mg of Pal-GHK contains 1,727.7 nmol versus 1,728 nmol for P21.
How many mg of P21 are equimolar to 1 mg of Pal-GHK?
1 mg of Pal-GHK (MW 578.8) is 1,727.7 nmol. The same number of moles of P21 (MW 578.7) weighs 0.9998 mg. Equimolar comparisons matter when testing two compounds side by side in the same assay.
Compare the molecular formulas of Pal-GHK and P21
PubChem lists Pal-GHK as C30H54N6O5 (578.8 g/mol) and P21 as C27H42N6O8 (578.7 g/mol). Pal-GHK is a lipopeptide; P21 is a peptidomimetic. These formulas refer to the parent compounds without salt counter-ions.
A 10 mg vial of P21 equals how many mg of Pal-GHK in moles?
10 mg of P21 (MW 578.7) is 17.28 µmol. The same amount of Pal-GHK (MW 578.8) would weigh 10.002 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 5 mg vial of P21 equals how many mg of Pal-GHK in moles?
5 mg of P21 (MW 578.7) is 8.64 µmol. The same amount of Pal-GHK (MW 578.8) would weigh 5.001 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 10 mg vial of Pal-GHK equals how many mg of P21 in moles?
10 mg of Pal-GHK (MW 578.8) is 17.277 µmol. The same amount of P21 (MW 578.7) would weigh 9.998 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 Pal-GHK and P21?. UK Research Peptide Reference. Retrieved 11 October 2026, from https://www.sablepeptides.co.uk/questions/compare/p21-vs-pal-ghk/#sqa-041303
APA
Sable Peptides. (2026, October 11). *What is the difference between Pal-GHK and P21?*. UK Research Peptide Reference. https://www.sablepeptides.co.uk/questions/compare/p21-vs-pal-ghk/#sqa-041303
BibTeX
@misc{sable_#sqa-041303_2026,
author = {{Sable Peptides}},
title = {{What is the difference between Pal-GHK and P21?}},
year = {2026},
howpublished = {\url{https://www.sablepeptides.co.uk/questions/compare/p21-vs-pal-ghk/#sqa-041303}},
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