Sable · Question
What is the difference between Semax and Sermorelin?
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 Sermorelin?
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 Sermorelin?
Semax has a molecular weight of about 813.9 g/mol and Sermorelin about 3357.9 g/mol (PubChem), so Sermorelin is heavier by 2,544 g/mol, a ratio of 4.13. This means 1 mg of Semax contains 1,228.7 nmol versus 297.8 nmol for Sermorelin.
How many mg of Sermorelin 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 Sermorelin (MW 3357.9) weighs 4.126 mg. Equimolar comparisons matter when testing two compounds side by side in the same assay.
Compare the molecular formulas of Semax and Sermorelin
PubChem lists Semax as C37H51N9O10S (813.9 g/mol) and Sermorelin as C149H246N44O42S (3357.9 g/mol). Semax is a peptide; Sermorelin is a peptide. These formulas refer to the parent compounds without salt counter-ions.
A 5 mg vial of Semax equals how many mg of Sermorelin in moles?
5 mg of Semax (MW 813.9) is 6.143 µmol. The same amount of Sermorelin (MW 3357.9) would weigh 20.628 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 Sermorelin in moles?
10 mg of Semax (MW 813.9) is 12.287 µmol. The same amount of Sermorelin (MW 3357.9) would weigh 41.257 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 Sermorelin in moles?
30 mg of Semax (MW 813.9) is 36.86 µmol. The same amount of Sermorelin (MW 3357.9) would weigh 123.8 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 2 mg vial of Sermorelin equals how many mg of Semax in moles?
2 mg of Sermorelin (MW 3357.9) is 0.5956 µmol. The same amount of Semax (MW 813.9) would weigh 0.4848 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 5 mg vial of Sermorelin equals how many mg of Semax in moles?
5 mg of Sermorelin (MW 3357.9) is 1.489 µmol. The same amount of Semax (MW 813.9) would weigh 1.212 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 10 mg vial of Sermorelin equals how many mg of Semax in moles?
10 mg of Sermorelin (MW 3357.9) is 2.978 µmol. The same amount of Semax (MW 813.9) would weigh 2.424 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 Sermorelin?. UK Research Peptide Reference. Retrieved 11 October 2026, from https://www.sablepeptides.co.uk/questions/compare/semax-vs-sermorelin/#sqa-040811
APA
Sable Peptides. (2026, October 11). *What is the difference between Semax and Sermorelin?*. UK Research Peptide Reference. https://www.sablepeptides.co.uk/questions/compare/semax-vs-sermorelin/#sqa-040811
BibTeX
@misc{sable_#sqa-040811_2026,
author = {{Sable Peptides}},
title = {{What is the difference between Semax and Sermorelin?}},
year = {2026},
howpublished = {\url{https://www.sablepeptides.co.uk/questions/compare/semax-vs-sermorelin/#sqa-040811}},
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