TB-500 is a synthetic peptide corresponding to the bioactive 17-amino-acid actin-binding fragment of the protein Thymosin Beta-4. Also known as Thymosin Beta-4 Fragment, TB500. It is supplied as a lyophilised powder strictly as a reference compound for in-vitro laboratory and analytical research.
Research context (literature reference only)
Published preclinical literature has investigated TB-500 in in-vitro and animal-model studies of actin-monomer sequestration and cell-migration assays. These references are provided solely to contextualise the compound as a laboratory reference standard and do not describe, and must not be interpreted as, any effect, benefit or outcome in humans.
Specifications
Synonyms: Thymosin Beta-4 Fragment, TB500 CAS Number: 77591-33-4 Molecular Formula: C212H350N56O78S Molecular Weight: 4963.4 Da Appearance: White to off-white lyophilised powder Purity: ≥98% (HPLC) Format: Lyophilised powder Vial Size: 3ml Solubility: Soluble in bacteriostatic water Storage:
➝ Before reconstitution: Store lyophilised at −20 °C for long-term preservation. ➝ After reconstitution: Store at 2–8 °C.
Laboratory handling & storage
Store lyophilised at −20 °C. After reconstitution in bacteriostatic water, store at 2–8 °C. Reconstitution and handling information is provided for laboratory reference only and is not administration guidance.
Regulatory status
This product has no marketing authorisation from the MHRA, EMA, FDA or any other regulatory body for human or veterinary medicinal use. It is not a medicine, food, supplement or cosmetic.
Frequently asked questions
What is the CAS number of TB-500? The CAS number for TB-500 is 77591-33-4.
What purity is TB-500 supplied at? TB-500 is supplied at ≥98% (HPLC), independently HPLC-verified. A Certificate of Analysis for each batch is published on our Lab Tests page.
Is a Certificate of Analysis available for TB-500? Yes – every batch of TB-500 is third-party tested and the COA is available on our Lab Tests page.
How is TB-500 stored and shipped? TB-500 ships from the UK. Store as noted in the specifications; reconstitution information (where applicable) is provided as a laboratory handling reference only, using bacteriostatic water.
What is the molecular weight of TB-500? The molecular weight of TB-500 is 4963.4 Da.
FOR LABORATORY RESEARCH USE ONLY – NOT FOR HUMAN OR VETERINARY USE. Not for human or animal consumption, in-vivo use, or any clinical, diagnostic, food, cosmetic or therapeutic application. No MHRA, EMA or FDA marketing authorisation. By purchasing you confirm you are a qualified researcher (18+/21+ where required) and accept the Research Use Terms.