Sable · Question

What is the difference between Selank and TB-500?

Selank is a synthetic heptapeptide analogue of tuftsin extended with Pro-Gly-Pro, developed at the Institute of Molecular Genetics in Russia and studied in neuropeptide research (peptide, MW about 751.9 g/mol).

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

Last verified 2026-10-10

What is the difference between Selank and TB-500?

Which is heavier, Selank or TB-500?

Selank has a molecular weight of about 751.9 g/mol and TB-500 about 889 g/mol (PubChem), so TB-500 is heavier by 137.1 g/mol, a ratio of 1.18. This means 1 mg of Selank contains 1,330 nmol versus 1,124.9 nmol for TB-500.

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

1 mg of Selank (MW 751.9) is 1,330 nmol. The same number of moles of TB-500 (MW 889) weighs 1.182 mg. Equimolar comparisons matter when testing two compounds side by side in the same assay.

Compare the molecular formulas of Selank and TB-500

PubChem lists Selank as C33H57N11O9 (751.9 g/mol) and TB-500 as C38H68N10O14 (889 g/mol). Selank is a peptide; TB-500 is a peptide. These formulas refer to the parent compounds without salt counter-ions.

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

5 mg of Selank (MW 751.9) is 6.65 µmol. The same amount of TB-500 (MW 889) would weigh 5.912 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.

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

10 mg of Selank (MW 751.9) is 13.3 µmol. The same amount of TB-500 (MW 889) would weigh 11.823 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 Selank in moles?

10 mg of TB-500 (MW 889) is 11.249 µmol. The same amount of Selank (MW 751.9) would weigh 8.458 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 Selank in moles?

2 mg of TB-500 (MW 889) is 2.25 µmol. The same amount of Selank (MW 751.9) would weigh 1.692 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 Selank in moles?

5 mg of TB-500 (MW 889) is 5.624 µmol. The same amount of Selank (MW 751.9) would weigh 4.229 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 Selank in moles?

15 mg of TB-500 (MW 889) is 16.873 µmol. The same amount of Selank (MW 751.9) would weigh 12.687 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 Selank in moles?

20 mg of TB-500 (MW 889) is 22.497 µmol. The same amount of Selank (MW 751.9) would weigh 16.916 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 Selank and TB-500?. UK Research Peptide Reference. Retrieved 11 October 2026, from https://www.sablepeptides.co.uk/questions/compare/selank-vs-tb-500/#sqa-040733

APA

Sable Peptides. (2026, October 11). *What is the difference between Selank and TB-500?*. UK Research Peptide Reference. https://www.sablepeptides.co.uk/questions/compare/selank-vs-tb-500/#sqa-040733

BibTeX

@misc{sable_#sqa-040733_2026,
  author = {{Sable Peptides}},
  title = {{What is the difference between Selank and TB-500?}},
  year = {2026},
  howpublished = {\url{https://www.sablepeptides.co.uk/questions/compare/selank-vs-tb-500/#sqa-040733}},
  note = {Accessed 11 October 2026. CC BY 4.0}
}

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Date modified: 2026-10-10