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| Attribute |  |
|---|---|
| Category | Recovery & Repair |
| Evidence grade | C Preclinical research |
| Regulatory status | Not approved — research use only |
| Human amounts | None establishedDosing reference Study durations |
| Format | Lyophilized vial |
| Type | Single compound |
| Molecular formula | C38H68N10O14 |
| Molecular weight | 889 g/mol |
| CAS number | 885340-08-9 |
| Sequence | Ac- |
| References | 24 |
| Summary | TB-500 is a synthetic, acetylated seven-amino-acid fragment of thymosin beta-4, and it is often described as if it were the full protein, which is inaccurate. Evidence for the full protein comes from cell, animal and a few human studies, whereas FDA found no human data for TB-500 itself. It is not approved and is prohibited in sport. |