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Repair & recovery

TB-500

Also known as Thymosin β4

Thymosin beta-4 is a 43-amino-acid peptide found in most human and animal cells, where it binds actin, a protein that forms part of the cell's internal skeleton.

"TB-500" is a name used in the research market for synthetic thymosin beta-4, and sometimes for fragments of it. The molecular weight and formula below are for the full 43-amino-acid peptide.

Structure and form

Molecular formula	C212H350N56O78S
Molecular weight	4963.5 g/mol
Form	Lyophilised powder
Storage	−20 °C, protect from light

Research background

Thymosin beta-4 has been studied in cell and animal models of cell migration, blood-vessel formation and tissue repair.

Formulations of thymosin beta-4 have been tested in early clinical trials, but none is an approved medicine in the UK.

Thymosin beta-4 and its derivatives, including TB-500, are on the World Anti-Doping Agency's prohibited list.

Storage and handling

Supplied as a lyophilised (freeze-dried) powder in a sealed 4 ml vial. Keep it sealed until use. Storage: −20 °C, protect from light. Once reconstituted, solutions are usually kept refrigerated at 2–8 °C and used promptly. Follow your laboratory's own protocols and safety data.

Is TB-500 approved for human use?

No. TB-500 is sold by vialinepeptides strictly for in-vitro laboratory research. It is not a medicine, food or cosmetic and is not for human or veterinary use. Nothing on this page is medical advice.

All products are sold strictly for in-vitro laboratory research. They are not medicines, food or cosmetics, and are not for human or veterinary use. Buyers must be 18 or over.