What Is TB-500?
A synthetic fragment of Thymosin β-4 studied for actin regulation and cell migration.
01Definition
TB-500 is a regenerative research compound. A synthetic fragment of Thymosin β-4 studied for actin regulation and cell migration. It is also known as Thymosin β-4 fragment.
Sequence · Contains the LKKTETQ actin-binding motif
02Research Mechanism
TB-500 corresponds to the active region of Thymosin β-4, a naturally occurring actin-sequestering protein. Its central LKKTETQ motif binds G-actin, and in research models it is studied for its influence on actin polymerization, cytoskeletal organization, and directed cell migration toward sites of injury.
Research framing only · No human-use claims
03Key Facts
| Classification | Regenerative |
| Molecular weight | 4,963.4 g/mol |
| Also known as | Thymosin β-4 fragment |
| Purity spec | ≥99% HPLC |
| Verification | MZ Biolabs · 5-panel |
| Use | Research Use Only |
04FAQ
What is TB-500?
TB-500 is a regenerative research compound. A synthetic fragment of Thymosin β-4 studied for actin regulation and cell migration. It is also known as Thymosin β-4 fragment. It is supplied strictly for laboratory research use.
What class of compound is TB-500?
TB-500 is categorized as Regenerative and is studied alongside related compounds in that research area.
What is the molecular weight of TB-500?
TB-500 has a molecular weight of 4,963.4 g/mol.
How is TB-500 tested?
Every Ethos Bio lot of TB-500 is analyzed by an independent third-party laboratory (MZ Biolabs, Arizona) on a five-point panel — HPLC purity, mass-spec identity, endotoxin, heavy metals, and sterility — with a batch-specific Certificate of Analysis.
View TB-500 product → · Full monograph → · Molecular weight →