Sable · Question
What is the difference between Ipamorelin and SS-31?
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 SS-31?
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 SS-31?
Ipamorelin has a molecular weight of about 711.9 g/mol and SS-31 about 639.8 g/mol (PubChem), so Ipamorelin is heavier by 72.1 g/mol, a ratio of 1.11. This means 1 mg of Ipamorelin contains 1,404.7 nmol versus 1,563 nmol for SS-31.
How many mg of SS-31 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 SS-31 (MW 639.8) weighs 0.8987 mg. Equimolar comparisons matter when testing two compounds side by side in the same assay.
Compare the molecular formulas of Ipamorelin and SS-31
PubChem lists Ipamorelin as C38H49N9O5 (711.9 g/mol) and SS-31 as C32H49N9O5 (639.8 g/mol). Ipamorelin is a peptide; SS-31 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 SS-31 in moles?
2 mg of Ipamorelin (MW 711.9) is 2.809 µmol. The same amount of SS-31 (MW 639.8) would weigh 1.797 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 SS-31 in moles?
10 mg of Ipamorelin (MW 711.9) is 14.047 µmol. The same amount of SS-31 (MW 639.8) would weigh 8.987 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 SS-31 in moles?
5 mg of Ipamorelin (MW 711.9) is 7.023 µmol. The same amount of SS-31 (MW 639.8) would weigh 4.494 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 5 mg vial of SS-31 equals how many mg of Ipamorelin in moles?
5 mg of SS-31 (MW 639.8) is 7.815 µmol. The same amount of Ipamorelin (MW 711.9) would weigh 5.563 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 10 mg vial of SS-31 equals how many mg of Ipamorelin in moles?
10 mg of SS-31 (MW 639.8) is 15.63 µmol. The same amount of Ipamorelin (MW 711.9) would weigh 11.127 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
More questions about ipamorelin
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 Ipamorelin and SS-31?. UK Research Peptide Reference. Retrieved 11 October 2026, from https://www.sablepeptides.co.uk/questions/compare/ipamorelin-vs-ss-31/#sqa-039549
APA
Sable Peptides. (2026, October 11). *What is the difference between Ipamorelin and SS-31?*. UK Research Peptide Reference. https://www.sablepeptides.co.uk/questions/compare/ipamorelin-vs-ss-31/#sqa-039549
BibTeX
@misc{sable_#sqa-039549_2026,
author = {{Sable Peptides}},
title = {{What is the difference between Ipamorelin and SS-31?}},
year = {2026},
howpublished = {\url{https://www.sablepeptides.co.uk/questions/compare/ipamorelin-vs-ss-31/#sqa-039549}},
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