TB-500 (Full-Length Thymosin Beta-4)

This TB-500 listing is full-length thymosin beta-4, a synthetic counterpart of the 43-amino-acid peptide originally characterized from thymic tissue. It has the molecular formula C212H350N56O78S, a reference peptide molecular weight of 4,963.4 g/mol excluding salt counterions, and CAS number 77591-33-4 for the reference free peptide. The peptide is notable for containing a central actin-binding domain — a region structurally complementary to actin, a major structural protein found in biology. Thymosin Beta-4 is classified as a naturally occurring intracellular peptide and is one of the most abundant members of the beta-thymosin family.

Supplied as one individual 10 mg vial. Each purchase quantity refers to one individual vial, not a supplier box.

Chemical identifiers refer to the stated reference form; salt counterions can change formula weight. Follow the supplied material’s documentation for storage and handling. Cited research is not a batch analysis of this product.

For laboratory research use only. Not for human or animal use.

Research and chemical references

• Full-length thymosin beta-4; reference formula excludes acetate counterions