Sable · Question
What is the difference between Semax and Tesamorelin?
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 Tesamorelin?
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 Tesamorelin?
Semax has a molecular weight of about 813.9 g/mol and Tesamorelin about 5136 g/mol (PubChem), so Tesamorelin is heavier by 4,322.1 g/mol, a ratio of 6.31. This means 1 mg of Semax contains 1,228.7 nmol versus 194.7 nmol for Tesamorelin.
How many mg of Tesamorelin 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 Tesamorelin (MW 5136) weighs 6.31 mg. Equimolar comparisons matter when testing two compounds side by side in the same assay.
Compare the molecular formulas of Semax and Tesamorelin
PubChem lists Semax as C37H51N9O10S (813.9 g/mol) and Tesamorelin as C221H366N72O67S (5136 g/mol). Semax is a peptide; Tesamorelin 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 Tesamorelin in moles?
5 mg of Semax (MW 813.9) is 6.143 µmol. The same amount of Tesamorelin (MW 5136) would weigh 31.552 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 Tesamorelin in moles?
10 mg of Semax (MW 813.9) is 12.287 µmol. The same amount of Tesamorelin (MW 5136) would weigh 63.104 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 Tesamorelin in moles?
30 mg of Semax (MW 813.9) is 36.86 µmol. The same amount of Tesamorelin (MW 5136) would weigh 189.3 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 2 mg vial of Tesamorelin equals how many mg of Semax in moles?
2 mg of Tesamorelin (MW 5136) is 0.3894 µmol. The same amount of Semax (MW 813.9) would weigh 0.3169 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 10 mg vial of Tesamorelin equals how many mg of Semax in moles?
10 mg of Tesamorelin (MW 5136) is 1.947 µmol. The same amount of Semax (MW 813.9) would weigh 1.585 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 5 mg vial of Tesamorelin equals how many mg of Semax in moles?
5 mg of Tesamorelin (MW 5136) is 0.9735 µmol. The same amount of Semax (MW 813.9) would weigh 0.7923 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 20 mg vial of Tesamorelin equals how many mg of Semax in moles?
20 mg of Tesamorelin (MW 5136) is 3.894 µmol. The same amount of Semax (MW 813.9) would weigh 3.169 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 Tesamorelin?. UK Research Peptide Reference. Retrieved 11 October 2026, from https://www.sablepeptides.co.uk/questions/compare/semax-vs-tesamorelin/#sqa-040815
APA
Sable Peptides. (2026, October 11). *What is the difference between Semax and Tesamorelin?*. UK Research Peptide Reference. https://www.sablepeptides.co.uk/questions/compare/semax-vs-tesamorelin/#sqa-040815
BibTeX
@misc{sable_#sqa-040815_2026,
author = {{Sable Peptides}},
title = {{What is the difference between Semax and Tesamorelin?}},
year = {2026},
howpublished = {\url{https://www.sablepeptides.co.uk/questions/compare/semax-vs-tesamorelin/#sqa-040815}},
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