Sable · Question
What is the difference between Tesamorelin and TB-500?
Tesamorelin is a stabilised analogue of the full 44-residue GHRH with an N-terminal trans-3-hexenoyl group, used in GHRH receptor research (peptide, MW about 5136 g/mol).
Research use only. Not for human consumption. No health claims.
Last verified 2026-10-10
What is the difference between Tesamorelin and TB-500?
Tesamorelin is a stabilised analogue of the full 44-residue GHRH with an N-terminal trans-3-hexenoyl group, used in GHRH receptor research (peptide, MW about 5136 g/mol).
Which is heavier, Tesamorelin or TB-500?
Tesamorelin has a molecular weight of about 5136 g/mol and TB-500 about 889 g/mol (PubChem), so Tesamorelin is heavier by 4,247 g/mol, a ratio of 5.78. This means 1 mg of Tesamorelin contains 194.7 nmol versus 1,124.9 nmol for TB-500.
How many mg of TB-500 are equimolar to 1 mg of Tesamorelin?
1 mg of Tesamorelin (MW 5136) is 194.7 nmol. The same number of moles of TB-500 (MW 889) weighs 0.1731 mg. Equimolar comparisons matter when testing two compounds side by side in the same assay.
Compare the molecular formulas of Tesamorelin and TB-500
PubChem lists Tesamorelin as C221H366N72O67S (5136 g/mol) and TB-500 as C38H68N10O14 (889 g/mol). Tesamorelin is a peptide; TB-500 is a peptide. These formulas refer to the parent compounds without salt counter-ions.
A 10 mg vial of TB-500 equals how many mg of Tesamorelin in moles?
10 mg of TB-500 (MW 889) is 11.249 µmol. The same amount of Tesamorelin (MW 5136) would weigh 57.773 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 2 mg vial of TB-500 equals how many mg of Tesamorelin in moles?
2 mg of TB-500 (MW 889) is 2.25 µmol. The same amount of Tesamorelin (MW 5136) would weigh 11.555 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 5 mg vial of TB-500 equals how many mg of Tesamorelin in moles?
5 mg of TB-500 (MW 889) is 5.624 µmol. The same amount of Tesamorelin (MW 5136) would weigh 28.886 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 15 mg vial of TB-500 equals how many mg of Tesamorelin in moles?
15 mg of TB-500 (MW 889) is 16.873 µmol. The same amount of Tesamorelin (MW 5136) would weigh 86.659 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 20 mg vial of TB-500 equals how many mg of Tesamorelin in moles?
20 mg of TB-500 (MW 889) is 22.497 µmol. The same amount of Tesamorelin (MW 5136) would weigh 115.5 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 TB-500 in moles?
2 mg of Tesamorelin (MW 5136) is 0.3894 µmol. The same amount of TB-500 (MW 889) would weigh 0.3462 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 TB-500 in moles?
10 mg of Tesamorelin (MW 5136) is 1.947 µmol. The same amount of TB-500 (MW 889) would weigh 1.731 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 TB-500 in moles?
5 mg of Tesamorelin (MW 5136) is 0.9735 µmol. The same amount of TB-500 (MW 889) would weigh 0.8655 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 TB-500 in moles?
20 mg of Tesamorelin (MW 5136) is 3.894 µmol. The same amount of TB-500 (MW 889) would weigh 3.462 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
More questions about tesamorelin
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 Tesamorelin and TB-500?. UK Research Peptide Reference. Retrieved 11 October 2026, from https://www.sablepeptides.co.uk/questions/compare/tb-500-vs-tesamorelin/#sqa-040977
APA
Sable Peptides. (2026, October 11). *What is the difference between Tesamorelin and TB-500?*. UK Research Peptide Reference. https://www.sablepeptides.co.uk/questions/compare/tb-500-vs-tesamorelin/#sqa-040977
BibTeX
@misc{sable_#sqa-040977_2026,
author = {{Sable Peptides}},
title = {{What is the difference between Tesamorelin and TB-500?}},
year = {2026},
howpublished = {\url{https://www.sablepeptides.co.uk/questions/compare/tb-500-vs-tesamorelin/#sqa-040977}},
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