

Description
Synthetic 43-residue peptide corresponding to thymosin beta-4, an actin-sequestering protein. Supplied as a lyophilized solid for in vitro research.
All products are supplied for laboratory research use only. Not for human or veterinary use. Not a drug, supplement or cosmetic. Full statement.
Certificate of AnalysisLot LP-2608-TB500-01
- Laboratory
- Vanguard Laboratory
- Report
- VL-TB500-0001
- Issued
- Aug 12, 2026
- Status
- Conforms
| Test | Method | Specification | Result |
|---|---|---|---|
| Purity | HPLC-UV / LC-MS | ≥ 99.0 % | 99.6 % |
| Identity | LC-MS | 4963.44 g/mol | Confirmed by LC-MS |
| Appearance | Visual | White to off-white lyophilized powder | Conforms |
PDF pending upload Verify link pending
Chromatographic purity is the share of UV-absorbing area at 214 nm and says nothing about net quantity. Accreditation is granted per method; see How we test for scope.
Specifications
| Product code | TB500 |
|---|---|
| CAS | 77591-33-4 |
| Formula | C212H350N56O78S |
| Molecular weight | 4963.44 g/mol |
| Sequence | Stated on the certificate of analysis |
| Appearance | White to off-white lyophilized powder |
| Storage | Lyophilized: 2–8 °C (short term) or −20 °C (long term), desiccated, protected from light. Keep vial sealed. After reconstitution: 2–8 °C. |
| Presentations | 10 mg (TB500-10) |
| Class | Repair & tissue |
25 in stock
TB-500 10 mg
Lyophilized solid · CAS 77591-33-4 · C212H350N56O78S
$80.00 per vial
Buy More, Save More
| Quantity | Price / vial | Save |
|---|---|---|
| 1 – 3 | $80.00 | — |
| 4 – 7 | $76.00 | 5 % |
| 8+ | $72.00 | 10 % |
Research reagents from an American company. Every lot analyzed by an independent American laboratory.
Key Features
- American company, tested in independent American labs
- Identity by LC-MS and purity by HPLC-UV on every lot
- Certificate of analysis published and verifiable by lot number
- Lyophilized, sealed, shipped UPS 2nd Day Air the same day by 5 PM ET
- For laboratory and research use only
TB-500 10 mg
$80.00 × 1


