TB-500

TB-500 is a research-grade thymosin beta-4 research peptide available at For Peptides with ~99% HPLC purity, independent 3rd-party lab testing, and >90% fill volume. Every vial ships from our USA facility and is intended strictly for in vitro laboratory research — not for human or veterinary use. Explore other recovery research peptides in our recovery research collection.

TB-500 is a synthetic version of an active N-terminal fragment of Thymosin Beta-4 (Tβ4), a 43-amino-acid peptide that is the major actin-sequestering protein in mammalian cells. In research models, TB-500 has been studied for roles in actin polymerization, cell migration, and angiogenesis, particularly in tissue-repair contexts.

TB-500 is investigated in cell-migration studies, wound-repair models, cardiac remodeling research, and studies of actin sequestration dynamics.

Technical Specifications

• Sequence Region: N-terminal active fragment of Thymosin β4
• Molecular Weight: ~889 g/mol (fragment)
• CAS Number: 77591-33-4
• Appearance: White lyophilized powder
• Amount per Vial: 5 mg

Handling & Storage

• Lyophilized powder: Store at -20°C for long-term stability.
• After reconstitution: Store at 2-8°C and use within 30 days.
• Reconstitution: Use bacteriostatic water or sterile water for injection.
• Avoid: Repeated freeze-thaw cycles and direct light exposure.

Quality & Testing

• Purity: ~99% by HPLC
• Testing: Third-party independent laboratory analysis
• Fill Volume: >90% guaranteed
• Shipping: Cold-chain compatible, ships from USA

Frequently Asked Questions

What is the difference between TB-500 and Thymosin Beta-4?
TB-500 is a shorter synthetic fragment corresponding to the active N-terminal region of full-length Thymosin β4.

Purity?
~99% HPLC, third-party verified.

Storage?
-20°C lyophilized.

Why Researchers Choose For Peptides TB-500

• ~99% HPLC purity verified via high-performance liquid chromatography on every batch
• Independent 3rd-party lab testing with Certificate of Analysis (COA) available on request
• >90% fill volume guarantee — you get the peptide mass you paid for
• Ships from USA — fast domestic fulfillment, no international customs delays
• Real scientific support — questions answered by researchers, not a call center

Browse related research peptides in our recovery research collection, or view all our best-selling research peptides. For questions about TB-500 purity, COAs, or bulk research orders, call 1-877-336-7737 or start a live chat.

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