Research use only
TB-500
For research use only. Not for human or animal use.
FOR RESEARCH USE ONLY. NOT FOR HUMAN OR ANIMAL USE. This product is not a drug, food, cosmetic, or dietary supplement, and has not been evaluated or approved by the FDA for any use other than laboratory research. Not for diagnostic or therapeutic use. Sale is restricted to qualified research professionals and institutions.
What it is
This listing uses the catalog name TB-500. That name does not, by itself, choose between full-length thymosin beta-4 and a short synthetic fragment. Both appear under the same label in research catalogs.
Structure and sequence
Thymosin beta-4, when that is the molecule, is the 43-residue acetylated peptide Ac-SDKPDMAEIEKFDKSKLKKTETQEKNPLPSKETIEQEKQAGES. A heptapeptide built on LKKTETQ is a different chemical entity. The lot sequence has to match the certificate.
Molecular weight
Full-length thymosin beta-4 is near 4963 Da. A short LKKTETQ fragment is much smaller. The certificate of analysis reports the mass for the lot.
What published research models study
Goldstein and colleagues reviewed thymosin beta-4 as an actin-binding peptide in 2012 (PMID 22074294). That review is about the 43-residue peptide, not an automatic description of every vial labeled TB-500.
- Goldstein et al., 2012. PMID 22074294
Storage and handling
Supplied as a lyophilized solid in a sealed vial unless the catalog row states another format. Recommended storage is −20 °C. Trained laboratory personnel should handle the vial with appropriate personal protective equipment. Identity, purity, salt form, and lot-specific notes belong on the certificate of analysis, which is available on request.
Catalog listing
TB-500 in the research catalog
Latest published studies · How certificates are handled