

TB-500 is a synthetic 43-amino-acid peptide corresponding to the sequence of thymosin β4, supplied as a lyophilised powder for in-vitro laboratory research. In the scientific literature it is studied as a model peptide in actin-binding and cell-migration assay systems. Each batch is characterised by RP-HPLC for purity and mass spectrometry for identity and released with a batch-specific Certificate of Analysis.
Research Use Only. Intended strictly for in-vitro laboratory research. Not a drug, food, or cosmetic; not for human or animal consumption, diagnosis, treatment, or therapeutic use. Sold only to qualified, verified researchers.
- CAS Number
- 77591-33-4
- Molecular Formula
- C₂₁₂H₃₅₀N₅₆O₇₈S
- Molecular Weight
- 4963.44 g/mol
- Sequence
- Ac-SDKPDMAEIEKFDKSKLKKTETQEKNPLPSKETIEQEKQAGES-OH (43 aa)
- Appearance
- White to off-white lyophilised powder
- Storage
- Store lyophilised powder desiccated at −20 °C, protected from light and moisture.
- Reconstitution
- See Lab Preparation
- Shelf Life
- ≥24 months lyophilised when stored as directed; reconstituted material kept refrigerated and used within ~6 weeks.
For laboratory handling only. Reconstitute the lyophilised powder by adding the chosen research-grade solvent (e.g. sterile or bacteriostatic water) slowly against the inside wall of the vial; do not inject directly onto the powder. Swirl gently until fully dissolved — do not shake or vortex vigorously, as agitation can degrade peptide material. Calculate the solvent volume to reach the concentration required for your assay. Aliquot to minimise freeze–thaw cycles. Store the reconstituted solution refrigerated and use within approximately 6 weeks. All handling should be performed by qualified laboratory personnel under appropriate conditions.
Certificate of Analysis — Batch TB410-0918
HPLC Purity99.82%
Mass SpectrometryIdentity confirmed
Test Date3 October
LaboratoryJanoshik Analytical


