Also known as Thymosin Beta 4 TB500 5mg, Thymosin Beta 4, TB500, TB-500, TB 500, Thymosin Beta-4, Thymosin B4 Chemical Description Thymosin Beta 4 TB500 is a research peptide. ThymosinB4 is a 43-amino acid protein that is in all animal cells including humans. TB500 is a synthetic peptide of this protein. TB 500 upregulates the proteins that build cells. It increases the number of cell building proteins such as Myosin and Actin. These components control movement in the form of muscle contractions. Actin builds new pathways for blood vessels to help heal the wounds and muscle tares. Molecular formula: C212H350N56O78S Thymosing Beta 4 TB500 Sequence: Ac-Ser-Asp-Lys-Pro-Asp-Met-Ala-Glu-Ile-Glu-Lys-Phe-Asp-Lys-Ser-Lys-Leu-Lys-Lys-Thr-Glu-Thr-Gln-Glu-Lys-Asn-Pro-Leu-Pro-Ser-Lys-Glu-Thr-Ile-Glu-Gln-Glu-Lys-Gln-Ala-Gly-Glu-Ser CAS number: 77591-33-4 Molar Mass: 4963.4408 g/mol PubChem CID: 16132341