Sable · Question
What is the difference between Semax and Matrixyl?
Semax is a heptapeptide analogue of the ACTH(4-7) fragment extended with Pro-Gly-Pro, studied in neuropeptide and BDNF-expression research in rodent models (peptide, MW about 813.9 g/mol).
Research use only. Not for human consumption. No health claims.
Last verified 2026-10-10
What is the difference between Semax and Matrixyl?
Semax is a heptapeptide analogue of the ACTH(4-7) fragment extended with Pro-Gly-Pro, studied in neuropeptide and BDNF-expression research in rodent models (peptide, MW about 813.9 g/mol).
Which is heavier, Semax or Matrixyl?
Semax has a molecular weight of about 813.9 g/mol and Matrixyl about 802.1 g/mol (PubChem), so Semax is heavier by 11.8 g/mol, a ratio of 1.01. This means 1 mg of Semax contains 1,228.7 nmol versus 1,246.7 nmol for Matrixyl.
How many mg of Matrixyl are equimolar to 1 mg of Semax?
1 mg of Semax (MW 813.9) is 1,228.7 nmol. The same number of moles of Matrixyl (MW 802.1) weighs 0.9855 mg. Equimolar comparisons matter when testing two compounds side by side in the same assay.
Compare the molecular formulas of Semax and Matrixyl
PubChem lists Semax as C37H51N9O10S (813.9 g/mol) and Matrixyl as C39H75N7O10 (802.1 g/mol). Semax is a peptide; Matrixyl is a lipopeptide. These formulas refer to the parent compounds without salt counter-ions.
A 5 mg vial of Matrixyl equals how many mg of Semax in moles?
5 mg of Matrixyl (MW 802.1) is 6.234 µmol. The same amount of Semax (MW 813.9) would weigh 5.074 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 10 mg vial of Matrixyl equals how many mg of Semax in moles?
10 mg of Matrixyl (MW 802.1) is 12.467 µmol. The same amount of Semax (MW 813.9) would weigh 10.147 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 5 mg vial of Semax equals how many mg of Matrixyl in moles?
5 mg of Semax (MW 813.9) is 6.143 µmol. The same amount of Matrixyl (MW 802.1) would weigh 4.928 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 10 mg vial of Semax equals how many mg of Matrixyl in moles?
10 mg of Semax (MW 813.9) is 12.287 µmol. The same amount of Matrixyl (MW 802.1) would weigh 9.855 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 30 mg vial of Semax equals how many mg of Matrixyl in moles?
30 mg of Semax (MW 813.9) is 36.86 µmol. The same amount of Matrixyl (MW 802.1) would weigh 29.565 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 Semax and Matrixyl?. UK Research Peptide Reference. Retrieved 11 October 2026, from https://www.sablepeptides.co.uk/questions/compare/matrixyl-vs-semax/#sqa-040847
APA
Sable Peptides. (2026, October 11). *What is the difference between Semax and Matrixyl?*. UK Research Peptide Reference. https://www.sablepeptides.co.uk/questions/compare/matrixyl-vs-semax/#sqa-040847
BibTeX
@misc{sable_#sqa-040847_2026,
author = {{Sable Peptides}},
title = {{What is the difference between Semax and Matrixyl?}},
year = {2026},
howpublished = {\url{https://www.sablepeptides.co.uk/questions/compare/matrixyl-vs-semax/#sqa-040847}},
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