Sable · Question

What is the difference between Ipamorelin and TB-500?

Ipamorelin is a pentapeptide ghrelin receptor agonist reported in 1998 as a selective growth hormone secretagogue in endocrine research (peptide, MW about 711.9 g/mol).

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

Last verified 2026-10-10

What is the difference between Ipamorelin and TB-500?

Ipamorelin is a pentapeptide ghrelin receptor agonist reported in 1998 as a selective growth hormone secretagogue in endocrine research (peptide, MW about 711.9 g/mol).

Which is heavier, Ipamorelin or TB-500?

Ipamorelin has a molecular weight of about 711.9 g/mol and TB-500 about 889 g/mol (PubChem), so TB-500 is heavier by 177.1 g/mol, a ratio of 1.25. This means 1 mg of Ipamorelin contains 1,404.7 nmol versus 1,124.9 nmol for TB-500.

How many mg of TB-500 are equimolar to 1 mg of Ipamorelin?

1 mg of Ipamorelin (MW 711.9) is 1,404.7 nmol. The same number of moles of TB-500 (MW 889) weighs 1.249 mg. Equimolar comparisons matter when testing two compounds side by side in the same assay.

Compare the molecular formulas of Ipamorelin and TB-500

PubChem lists Ipamorelin as C38H49N9O5 (711.9 g/mol) and TB-500 as C38H68N10O14 (889 g/mol). Ipamorelin is a peptide; TB-500 is a peptide. These formulas refer to the parent compounds without salt counter-ions.

A 2 mg vial of Ipamorelin equals how many mg of TB-500 in moles?

2 mg of Ipamorelin (MW 711.9) is 2.809 µmol. The same amount of TB-500 (MW 889) would weigh 2.498 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.

A 10 mg vial of Ipamorelin equals how many mg of TB-500 in moles?

10 mg of Ipamorelin (MW 711.9) is 14.047 µmol. The same amount of TB-500 (MW 889) would weigh 12.488 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.

A 5 mg vial of Ipamorelin equals how many mg of TB-500 in moles?

5 mg of Ipamorelin (MW 711.9) is 7.023 µmol. The same amount of TB-500 (MW 889) would weigh 6.244 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.

A 10 mg vial of TB-500 equals how many mg of Ipamorelin in moles?

10 mg of TB-500 (MW 889) is 11.249 µmol. The same amount of Ipamorelin (MW 711.9) would weigh 8.008 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 Ipamorelin in moles?

2 mg of TB-500 (MW 889) is 2.25 µmol. The same amount of Ipamorelin (MW 711.9) would weigh 1.602 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 Ipamorelin in moles?

5 mg of TB-500 (MW 889) is 5.624 µmol. The same amount of Ipamorelin (MW 711.9) would weigh 4.004 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 Ipamorelin in moles?

15 mg of TB-500 (MW 889) is 16.873 µmol. The same amount of Ipamorelin (MW 711.9) would weigh 12.012 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 Ipamorelin in moles?

20 mg of TB-500 (MW 889) is 22.497 µmol. The same amount of Ipamorelin (MW 711.9) would weigh 16.016 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 Ipamorelin and TB-500?. UK Research Peptide Reference. Retrieved 11 October 2026, from https://www.sablepeptides.co.uk/questions/compare/ipamorelin-vs-tb-500/#sqa-039617

APA

Sable Peptides. (2026, October 11). *What is the difference between Ipamorelin and TB-500?*. UK Research Peptide Reference. https://www.sablepeptides.co.uk/questions/compare/ipamorelin-vs-tb-500/#sqa-039617

BibTeX

@misc{sable_#sqa-039617_2026,
  author = {{Sable Peptides}},
  title = {{What is the difference between Ipamorelin and TB-500?}},
  year = {2026},
  howpublished = {\url{https://www.sablepeptides.co.uk/questions/compare/ipamorelin-vs-tb-500/#sqa-039617}},
  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