Synthetic thymosin β4 fragment, research grade. Lyophilised powder.
TB-500 is the synthetic, N-acetylated seven-residue fragment (LKKTETQ) of thymosin β4, a naturally occurring 43-amino-acid polypeptide. The fragment corresponds to the actin-binding domain of the parent protein and is the region most studied in isolation.
Because the fragment is substantially shorter than full-length thymosin β4, it is more tractable to synthesise at high purity and is the form typically used where a defined, reproducible reference standard is required.
Supplied as a research reference material only. Each lot ships with its own certificate of analysis covering identity by mass spectrometry and purity by reverse-phase HPLC.
Store the sealed vial in a cool, dry place, out of direct light. The lyophilised powder does not require refrigeration. Stable for 24 months from the manufacture date on the lot certificate.
Ships at ambient temperature, sealed exactly as it is stored. No cold pack and no refrigeration on arrival — keep it dry and away from humidity.
The powder is hygroscopic and the vial is vacuum-sealed under nitrogen. Moisture is what shortens its life, so leave the seal intact until the material is needed.
Every lot ships with a certificate of analysis matched to the lot number on the vial. How lots are assayed and documented.
Literature: tb-500
Research use only. Not for human or veterinary consumption. Not for diagnosis, treatment, cure, or prevention of disease. These products are not approved by the FDA. Sold only to purchasers 21 years of age or older.