Sable · Question
What is the difference between Pinealon and P21?
Pinealon is a synthetic tripeptide from the Khavinson short-peptide series studied in neuronal cell-culture research (peptide, MW about 418.4 g/mol).
Research use only. Not for human consumption. No health claims.
Last verified 2026-10-10
What is the difference between Pinealon and P21?
Pinealon is a synthetic tripeptide from the Khavinson short-peptide series studied in neuronal cell-culture research (peptide, MW about 418.4 g/mol).
Which is heavier, Pinealon or P21?
Pinealon has a molecular weight of about 418.4 g/mol and P21 about 578.7 g/mol (PubChem), so P21 is heavier by 160.3 g/mol, a ratio of 1.38. This means 1 mg of Pinealon contains 2,390.1 nmol versus 1,728 nmol for P21.
How many mg of P21 are equimolar to 1 mg of Pinealon?
1 mg of Pinealon (MW 418.4) is 2,390.1 nmol. The same number of moles of P21 (MW 578.7) weighs 1.383 mg. Equimolar comparisons matter when testing two compounds side by side in the same assay.
Compare the molecular formulas of Pinealon and P21
PubChem lists Pinealon as C15H26N6O8 (418.4 g/mol) and P21 as C27H42N6O8 (578.7 g/mol). Pinealon is a peptide; 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 Pinealon in moles?
10 mg of P21 (MW 578.7) is 17.28 µmol. The same amount of Pinealon (MW 418.4) would weigh 7.23 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 Pinealon in moles?
5 mg of P21 (MW 578.7) is 8.64 µmol. The same amount of Pinealon (MW 418.4) would weigh 3.615 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 10 mg vial of Pinealon equals how many mg of P21 in moles?
10 mg of Pinealon (MW 418.4) is 23.901 µmol. The same amount of P21 (MW 578.7) would weigh 13.831 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 20 mg vial of Pinealon equals how many mg of P21 in moles?
20 mg of Pinealon (MW 418.4) is 47.801 µmol. The same amount of P21 (MW 578.7) would weigh 27.663 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 Pinealon and P21?. UK Research Peptide Reference. Retrieved 11 October 2026, from https://www.sablepeptides.co.uk/questions/compare/p21-vs-pinealon/#sqa-041153
APA
Sable Peptides. (2026, October 11). *What is the difference between Pinealon and P21?*. UK Research Peptide Reference. https://www.sablepeptides.co.uk/questions/compare/p21-vs-pinealon/#sqa-041153
BibTeX
@misc{sable_#sqa-041153_2026,
author = {{Sable Peptides}},
title = {{What is the difference between Pinealon and P21?}},
year = {2026},
howpublished = {\url{https://www.sablepeptides.co.uk/questions/compare/p21-vs-pinealon/#sqa-041153}},
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