Sable · Question
What is the difference between LL-37 and Thymosin alpha-1?
LL-37 is the 37-residue active fragment of the human cathelicidin hCAP18, studied in antimicrobial-peptide and innate-immunity research (peptide, MW about 4493 g/mol).
Research use only. Not for human consumption. No health claims.
Last verified 2026-10-10
What is the difference between LL-37 and Thymosin alpha-1?
LL-37 is the 37-residue active fragment of the human cathelicidin hCAP18, studied in antimicrobial-peptide and innate-immunity research (peptide, MW about 4493 g/mol).
Which is heavier, LL-37 or Thymosin alpha-1?
LL-37 has a molecular weight of about 4493 g/mol and Thymosin alpha-1 about 3108.3 g/mol (PubChem), so LL-37 is heavier by 1,384.7 g/mol, a ratio of 1.45. This means 1 mg of LL-37 contains 222.6 nmol versus 321.7 nmol for Thymosin alpha-1.
How many mg of Thymosin alpha-1 are equimolar to 1 mg of LL-37?
1 mg of LL-37 (MW 4493) is 222.6 nmol. The same number of moles of Thymosin alpha-1 (MW 3108.3) weighs 0.6918 mg. Equimolar comparisons matter when testing two compounds side by side in the same assay.
Compare the molecular formulas of LL-37 and Thymosin alpha-1
PubChem lists LL-37 as C205H340N60O53 (4493 g/mol) and Thymosin alpha-1 as C129H215N33O55 (3108.3 g/mol). LL-37 is a peptide; Thymosin alpha-1 is a peptide. These formulas refer to the parent compounds without salt counter-ions.
A 10 mg vial of LL-37 equals how many mg of Thymosin alpha-1 in moles?
10 mg of LL-37 (MW 4493) is 2.226 µmol. The same amount of Thymosin alpha-1 (MW 3108.3) would weigh 6.918 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 5 mg vial of LL-37 equals how many mg of Thymosin alpha-1 in moles?
5 mg of LL-37 (MW 4493) is 1.113 µmol. The same amount of Thymosin alpha-1 (MW 3108.3) would weigh 3.459 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 5 mg vial of Thymosin alpha-1 equals how many mg of LL-37 in moles?
5 mg of Thymosin alpha-1 (MW 3108.3) is 1.609 µmol. The same amount of LL-37 (MW 4493) would weigh 7.227 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 10 mg vial of Thymosin alpha-1 equals how many mg of LL-37 in moles?
10 mg of Thymosin alpha-1 (MW 3108.3) is 3.217 µmol. The same amount of LL-37 (MW 4493) would weigh 14.455 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 LL-37 and Thymosin alpha-1?. UK Research Peptide Reference. Retrieved 11 October 2026, from https://www.sablepeptides.co.uk/questions/compare/ll-37-vs-thymosin-alpha-1/#sqa-039906
APA
Sable Peptides. (2026, October 11). *What is the difference between LL-37 and Thymosin alpha-1?*. UK Research Peptide Reference. https://www.sablepeptides.co.uk/questions/compare/ll-37-vs-thymosin-alpha-1/#sqa-039906
BibTeX
@misc{sable_#sqa-039906_2026,
author = {{Sable Peptides}},
title = {{What is the difference between LL-37 and Thymosin alpha-1?}},
year = {2026},
howpublished = {\url{https://www.sablepeptides.co.uk/questions/compare/ll-37-vs-thymosin-alpha-1/#sqa-039906}},
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