Sable · Question
What is the difference between Sermorelin and Tesamorelin?
Sermorelin is the 29-residue N-terminal fragment of growth hormone-releasing hormone, the shortest fully active GHRH fragment, used in GHRH receptor research (peptide, MW about 3357.9 g/mol).
Research use only. Not for human consumption. No health claims.
Last verified 2026-10-10
What is the difference between Sermorelin and Tesamorelin?
Sermorelin is the 29-residue N-terminal fragment of growth hormone-releasing hormone, the shortest fully active GHRH fragment, used in GHRH receptor research (peptide, MW about 3357.9 g/mol).
Which is heavier, Sermorelin or Tesamorelin?
Sermorelin has a molecular weight of about 3357.9 g/mol and Tesamorelin about 5136 g/mol (PubChem), so Tesamorelin is heavier by 1,778.1 g/mol, a ratio of 1.53. This means 1 mg of Sermorelin contains 297.8 nmol versus 194.7 nmol for Tesamorelin.
How many mg of Tesamorelin are equimolar to 1 mg of Sermorelin?
1 mg of Sermorelin (MW 3357.9) is 297.8 nmol. The same number of moles of Tesamorelin (MW 5136) weighs 1.53 mg. Equimolar comparisons matter when testing two compounds side by side in the same assay.
Compare the molecular formulas of Sermorelin and Tesamorelin
PubChem lists Sermorelin as C149H246N44O42S (3357.9 g/mol) and Tesamorelin as C221H366N72O67S (5136 g/mol). Sermorelin is a peptide; Tesamorelin is a peptide. These formulas refer to the parent compounds without salt counter-ions.
A 2 mg vial of Sermorelin equals how many mg of Tesamorelin in moles?
2 mg of Sermorelin (MW 3357.9) is 0.5956 µmol. The same amount of Tesamorelin (MW 5136) would weigh 3.059 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 Tesamorelin in moles?
5 mg of Sermorelin (MW 3357.9) is 1.489 µmol. The same amount of Tesamorelin (MW 5136) would weigh 7.648 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 Tesamorelin in moles?
10 mg of Sermorelin (MW 3357.9) is 2.978 µmol. The same amount of Tesamorelin (MW 5136) would weigh 15.295 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 Sermorelin in moles?
2 mg of Tesamorelin (MW 5136) is 0.3894 µmol. The same amount of Sermorelin (MW 3357.9) would weigh 1.308 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 Sermorelin in moles?
10 mg of Tesamorelin (MW 5136) is 1.947 µmol. The same amount of Sermorelin (MW 3357.9) would weigh 6.538 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 Sermorelin in moles?
5 mg of Tesamorelin (MW 5136) is 0.9735 µmol. The same amount of Sermorelin (MW 3357.9) would weigh 3.269 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 Sermorelin in moles?
20 mg of Tesamorelin (MW 5136) is 3.894 µmol. The same amount of Sermorelin (MW 3357.9) would weigh 13.076 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
More questions about sermorelin
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 Sermorelin and Tesamorelin?. UK Research Peptide Reference. Retrieved 11 October 2026, from https://www.sablepeptides.co.uk/questions/compare/sermorelin-vs-tesamorelin/#sqa-040874
APA
Sable Peptides. (2026, October 11). *What is the difference between Sermorelin and Tesamorelin?*. UK Research Peptide Reference. https://www.sablepeptides.co.uk/questions/compare/sermorelin-vs-tesamorelin/#sqa-040874
BibTeX
@misc{sable_#sqa-040874_2026,
author = {{Sable Peptides}},
title = {{What is the difference between Sermorelin and Tesamorelin?}},
year = {2026},
howpublished = {\url{https://www.sablepeptides.co.uk/questions/compare/sermorelin-vs-tesamorelin/#sqa-040874}},
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