Sable · Question
What is the difference between GHRP-2 and SS-31?
GHRP-2 is a synthetic growth hormone secretagogue hexapeptide studied as a ghrelin receptor (GHS-R1a) agonist in endocrine research (peptide, MW about 818 g/mol).
Research use only. Not for human consumption. No health claims.
Last verified 2026-10-10
What is the difference between GHRP-2 and SS-31?
GHRP-2 is a synthetic growth hormone secretagogue hexapeptide studied as a ghrelin receptor (GHS-R1a) agonist in endocrine research (peptide, MW about 818 g/mol).
Which is heavier, GHRP-2 or SS-31?
GHRP-2 has a molecular weight of about 818 g/mol and SS-31 about 639.8 g/mol (PubChem), so GHRP-2 is heavier by 178.2 g/mol, a ratio of 1.28. This means 1 mg of GHRP-2 contains 1,222.5 nmol versus 1,563 nmol for SS-31.
How many mg of SS-31 are equimolar to 1 mg of GHRP-2?
1 mg of GHRP-2 (MW 818) is 1,222.5 nmol. The same number of moles of SS-31 (MW 639.8) weighs 0.7822 mg. Equimolar comparisons matter when testing two compounds side by side in the same assay.
Compare the molecular formulas of GHRP-2 and SS-31
PubChem lists GHRP-2 as C45H55N9O6 (818 g/mol) and SS-31 as C32H49N9O5 (639.8 g/mol). GHRP-2 is a peptide; SS-31 is a peptide. These formulas refer to the parent compounds without salt counter-ions.
A 5 mg vial of GHRP-2 equals how many mg of SS-31 in moles?
5 mg of GHRP-2 (MW 818) is 6.112 µmol. The same amount of SS-31 (MW 639.8) would weigh 3.911 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 10 mg vial of GHRP-2 equals how many mg of SS-31 in moles?
10 mg of GHRP-2 (MW 818) is 12.225 µmol. The same amount of SS-31 (MW 639.8) would weigh 7.822 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 GHRP-2 in moles?
5 mg of SS-31 (MW 639.8) is 7.815 µmol. The same amount of GHRP-2 (MW 818) would weigh 6.393 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 GHRP-2 in moles?
10 mg of SS-31 (MW 639.8) is 15.63 µmol. The same amount of GHRP-2 (MW 818) would weigh 12.785 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
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 GHRP-2 and SS-31?. UK Research Peptide Reference. Retrieved 11 October 2026, from https://www.sablepeptides.co.uk/questions/compare/ghrp-2-vs-ss-31/#sqa-039049
APA
Sable Peptides. (2026, October 11). *What is the difference between GHRP-2 and SS-31?*. UK Research Peptide Reference. https://www.sablepeptides.co.uk/questions/compare/ghrp-2-vs-ss-31/#sqa-039049
BibTeX
@misc{sable_#sqa-039049_2026,
author = {{Sable Peptides}},
title = {{What is the difference between GHRP-2 and SS-31?}},
year = {2026},
howpublished = {\url{https://www.sablepeptides.co.uk/questions/compare/ghrp-2-vs-ss-31/#sqa-039049}},
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