Sable · Question

What is the difference between Tesamorelin and P21?

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).

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Last verified 2026-10-10

What is the difference between Tesamorelin and P21?

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 P21?

Tesamorelin has a molecular weight of about 5136 g/mol and P21 about 578.7 g/mol (PubChem), so Tesamorelin is heavier by 4,557.3 g/mol, a ratio of 8.88. This means 1 mg of Tesamorelin contains 194.7 nmol versus 1,728 nmol for P21.

How many mg of P21 are equimolar to 1 mg of Tesamorelin?

1 mg of Tesamorelin (MW 5136) is 194.7 nmol. The same number of moles of P21 (MW 578.7) weighs 0.1127 mg. Equimolar comparisons matter when testing two compounds side by side in the same assay.

Compare the molecular formulas of Tesamorelin and P21

PubChem lists Tesamorelin as C221H366N72O67S (5136 g/mol) and P21 as C27H42N6O8 (578.7 g/mol). Tesamorelin is a peptide; P21 is a peptidomimetic. These formulas refer to the parent compounds without salt counter-ions.

A 10 mg vial of P21 equals how many mg of Tesamorelin in moles?

10 mg of P21 (MW 578.7) is 17.28 µmol. The same amount of Tesamorelin (MW 5136) would weigh 88.751 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.

A 5 mg vial of P21 equals how many mg of Tesamorelin in moles?

5 mg of P21 (MW 578.7) is 8.64 µmol. The same amount of Tesamorelin (MW 5136) would weigh 44.375 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 P21 in moles?

2 mg of Tesamorelin (MW 5136) is 0.3894 µmol. The same amount of P21 (MW 578.7) would weigh 0.2254 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 P21 in moles?

10 mg of Tesamorelin (MW 5136) is 1.947 µmol. The same amount of P21 (MW 578.7) would weigh 1.127 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 P21 in moles?

5 mg of Tesamorelin (MW 5136) is 0.9735 µmol. The same amount of P21 (MW 578.7) would weigh 0.5634 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 P21 in moles?

20 mg of Tesamorelin (MW 5136) is 3.894 µmol. The same amount of P21 (MW 578.7) would weigh 2.254 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.

Cite this

Research use only. Not for consumption. No health claims.

Plain

Sable Peptides. (2026). What is the difference between Tesamorelin and P21?. UK Research Peptide Reference. Retrieved 11 October 2026, from https://www.sablepeptides.co.uk/questions/compare/p21-vs-tesamorelin/#sqa-040973

APA

Sable Peptides. (2026, October 11). *What is the difference between Tesamorelin and P21?*. UK Research Peptide Reference. https://www.sablepeptides.co.uk/questions/compare/p21-vs-tesamorelin/#sqa-040973

BibTeX

@misc{sable_#sqa-040973_2026,
  author = {{Sable Peptides}},
  title = {{What is the difference between Tesamorelin and P21?}},
  year = {2026},
  howpublished = {\url{https://www.sablepeptides.co.uk/questions/compare/p21-vs-tesamorelin/#sqa-040973}},
  note = {Accessed 11 October 2026. CC BY 4.0}
}

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Date modified: 2026-10-10