from$60
Repair & Recovery · SKU TB-5
TB-500
Thymosin beta-4 fragment used in cell-migration and recovery research.
$ 55 per 5 mg vial · free shipping over $300
Size
In stock · ships same day on orders before 2pm ET
Purity (HPLC-UV)≥99.3% on lot TB-2608-A
IdentityConfirmed by LC-MS
FormLyophilized powder, sealed vial
Endotoxin< 0.5 EU/mg (LAL)
Storage-20°C sealed · 2-8°C reconstituted
CertificateView COA for TB-2608-A →
CAS number885340-08-9
Molecular formulaC38H68N10O14
Molecular weight889.0 g/mol
Residues7
PubChemCID 62707662
Volume pricing, applied automatically in the cart
| Quantity | Per unit | You save |
|---|---|---|
| 3 to 4 units | $51.15 | 7% |
| 5 to 9 units | $48.95 | 11% |
| 10+ units | $46.20 | 16% |
Verify lot TB-2608-A in the COA library · This month's lot report
Ships same day on orders before 2pm ET. For laboratory research use only. Not for human or animal consumption.
Frequently bought together
Supplies researchers add to this order
Reconstitution solution30 mL · $25
Reconstitution kitKit · $49.99
What is TB-500?
TB-500 is a synthetic fragment of thymosin beta-4, a 43-amino-acid protein present in nearly all cell types that regulates actin, the structural protein cells use to move. In research it is used in cell-migration, wound-healing and recovery models where actin regulation and angiogenesis are the questions. Pepstral supplies TB-500 as a lyophilized powder, 5 mg net peptide per vial, tested by an independent US laboratory before listing.
→Read the full TB-500 research guide
What is TB-500 studied for?
- Actin-binding and cell-motility assays
- Wound-healing and tissue-recovery models
- Angiogenesis and endothelial studies
- Cardiac and skeletal muscle injury models
All applications above are in-vitro or preclinical research contexts. TB-500 is sold for laboratory research only and is not for human or animal use.
What does the certificate for lot TB-2608-A show?
Every lot of TB-500 is tested by an independent US laboratory before it is listed. The report for lot TB-2608-A is in the COA library and the lot number printed on the vial matches it. The current results:
| Test | Method | Lot TB-2608-A result |
|---|---|---|
| Identity | LC-MS | Matches the calculated mass for the sequence |
| Purity | HPLC-UV, 220 nm | 99.3% |
| Net peptide content | Amino acid analysis | Stated per vial on the certificate |
| Endotoxin | LAL, chromogenic | < 0.5 EU/mg |
| Sterility | USP <71> | Pass |
How is TB-500 handled and stored?
Sealed vials are stored at -20°C away from light and keep for 24 months. To reconstitute, add bacteriostatic water slowly down the inside wall of the vial and swirl until clear; never shake. Once in solution, keep at 2 to 8°C and use within the 28-day window on the certificate. The reconstitution guide covers volumes and syringe units and the concentration table gives the numbers for this vial.
Frequently asked questions
Is TB-500 the same as thymosin beta-4?
No. TB-500 is the active fragment, not the full 43-residue protein. Studies that need the complete protein should specify thymosin beta-4.
What does lot TB-2608-A report?
99.3% purity by HPLC-UV, identity by LC-MS and endotoxin below 0.5 EU per mg. The certificate is downloadable from the COA library.
How should TB-500 be stored once reconstituted?
At 2 to 8°C, protected from light, within the 28-day window on the certificate. Freeze-thaw cycles should be avoided.
Is TB-500 for human use?
No. Every product on this site is sold for in-vitro laboratory research only and is not for human or animal consumption, diagnostic or therapeutic use.
