Thymosin Alpha-1 is a 28-amino-acid immunomodulatory peptide. It is expensive per mg and one of the most-substituted peptides in the Australian grey market.
Immunomodulatory peptide
Also known as: TĪ±1 / Zadaxin
Why test Thymosin Alpha-1?
TĪ±1 is frequently substituted with cheaper, shorter peptides because few buyers can tell the difference visually. LC-MS identity is the only way to confirm the actual sequence.
Common issues we find
Substitution with thymosin beta-4 (TB-500)
Under-fill
Low purity from incomplete synthesis
Frequently asked questions
Is Thymosin Alpha-1 the same as TB-500?
No - TB-500 is thymosin beta-4 fragment, a completely different peptide. LC-MS resolves the mass difference cleanly.