Sable · Question

What is the difference between SS-31 and TB-500?

SS-31 is a mitochondria-targeted tetrapeptide (Szeto-Schiller peptide) that associates with cardiolipin in the inner mitochondrial membrane, studied in mitochondrial bioenergetics research (peptide, MW about 639.8 g/mol).

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Last verified 2026-10-10

What is the difference between SS-31 and TB-500?

Which is heavier, SS-31 or TB-500?

SS-31 has a molecular weight of about 639.8 g/mol and TB-500 about 889 g/mol (PubChem), so TB-500 is heavier by 249.2 g/mol, a ratio of 1.39. This means 1 mg of SS-31 contains 1,563 nmol versus 1,124.9 nmol for TB-500.

How many mg of TB-500 are equimolar to 1 mg of SS-31?

1 mg of SS-31 (MW 639.8) is 1,563 nmol. The same number of moles of TB-500 (MW 889) weighs 1.389 mg. Equimolar comparisons matter when testing two compounds side by side in the same assay.

Compare the molecular formulas of SS-31 and TB-500

PubChem lists SS-31 as C32H49N9O5 (639.8 g/mol) and TB-500 as C38H68N10O14 (889 g/mol). SS-31 is a peptide; TB-500 is a peptide. These formulas refer to the parent compounds without salt counter-ions.

A 5 mg vial of SS-31 equals how many mg of TB-500 in moles?

5 mg of SS-31 (MW 639.8) is 7.815 µmol. The same amount of TB-500 (MW 889) would weigh 6.947 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 TB-500 in moles?

10 mg of SS-31 (MW 639.8) is 15.63 µmol. The same amount of TB-500 (MW 889) would weigh 13.895 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 SS-31 in moles?

10 mg of TB-500 (MW 889) is 11.249 µmol. The same amount of SS-31 (MW 639.8) would weigh 7.197 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 SS-31 in moles?

2 mg of TB-500 (MW 889) is 2.25 µmol. The same amount of SS-31 (MW 639.8) would weigh 1.439 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 SS-31 in moles?

5 mg of TB-500 (MW 889) is 5.624 µmol. The same amount of SS-31 (MW 639.8) would weigh 3.598 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 SS-31 in moles?

15 mg of TB-500 (MW 889) is 16.873 µmol. The same amount of SS-31 (MW 639.8) would weigh 10.795 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 SS-31 in moles?

20 mg of TB-500 (MW 889) is 22.497 µmol. The same amount of SS-31 (MW 639.8) would weigh 14.394 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 SS-31 and TB-500?. UK Research Peptide Reference. Retrieved 11 October 2026, from https://www.sablepeptides.co.uk/questions/compare/ss-31-vs-tb-500/#sqa-040662

APA

Sable Peptides. (2026, October 11). *What is the difference between SS-31 and TB-500?*. UK Research Peptide Reference. https://www.sablepeptides.co.uk/questions/compare/ss-31-vs-tb-500/#sqa-040662

BibTeX

@misc{sable_#sqa-040662_2026,
  author = {{Sable Peptides}},
  title = {{What is the difference between SS-31 and TB-500?}},
  year = {2026},
  howpublished = {\url{https://www.sablepeptides.co.uk/questions/compare/ss-31-vs-tb-500/#sqa-040662}},
  note = {Accessed 11 October 2026. CC BY 4.0}
}

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Date modified: 2026-10-10