What is TB-500 in a research context?

TB-500 is a synthetic peptide fragment of the naturally occurring protein thymosin beta-4. It is studied in published research for its interactions with actin-binding and tissue-repair signaling pathways. It is supplied strictly for laboratory research; not for human consumption, diagnosis, treatment, or prevention of any disease.

How does TB-500 differ from full thymosin beta-4?

TB-500 is a synthetic fragment of the larger 43-amino-acid thymosin beta-4 (TB-4) protein. The fragment was selected to retain the actin-binding region of the parent molecule. This is a structural distinction; no research-outcome claims are made by Nexara.

What third-party testing is performed?

Each batch is tested by an independent ISO-certified laboratory using HPLC for purity, mass spectrometry for identity, and LAL assay for endotoxin contamination.

What are the storage requirements for TB-500?

Store the lyophilized vial at -20°C for long-term storage. After reconstitution with bacteriostatic water, store at 2–8°C and use within the shelf life listed in the Storage Requirements section.

How is TB-500 shipped?

Orders ship from Texas via USPS after payment confirmation. The shipment contains the lyophilized vial; bacteriostatic water is sold separately. A batch-matched COA is available on request.

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TB-500

Name: TB-500
Brand: Nexara Labs USA
SKU: tb-500
Price: 145.00 USD
Availability: InStock

≥99%

TB-500 is a synthetic peptide fragment corresponding to the active region of thymosin beta-4, a naturally occurring protein involved in cellular signaling processes. Laboratory research investigates TB-500 for its interaction with actin-binding pathways and cellular structural organization systems. Experimental studies examine how TB-500 participates in cellular communication networks related to structural remodeling processes, cytoskeletal dynamics, and peptide-mediated signaling in controlled research models. These investigations contribute to ongoing scientific research exploring thymosin-derived peptide fragments and their role in biological communication pathways. TB-500 continues to be studied in laboratory environments focused on actin-regulatory peptide biology and cellular structural signaling mechanisms. For research use only. Not for human consumption.

$145.00· 10mg

Strength

TB-500 · 10mgTB-500 · 10mg

$145.00

Research this compound

Compound profileTB-500: mechanism, identity & citations Class overviewTissue-Repair Peptides

For research use only. Not for human consumption.

01Specifications

Identity, storage, and what ships.

The technical record. Identity rows reflect literature-cited values for this compound; storage rows describe the conditions under which Nexara holds and ships the lyophilized form.

Identity

Appearance: White lyophilized powder
Sequence: Synthetic Thymosin β-4 fragment containing the LKKTETQ active region
Synonyms: Thymosin Beta-4 Fragment, Tβ4 Fragment
Purity: ≥99%

Storage profile

Storage (Lyophilized): -20°C (long-term), 2-8°C up to 30 days (short-term)
Storage (Reconstituted): 2-8°C
Shelf Life (Lyophilized): 24 months at -20°C
Shelf Life (Reconstituted): Up to 28 days at 2-8°C
Reconstitution: Bacteriostatic water (0.9% benzyl alcohol) for research reconstitution
Handling: Protect from direct light. Avoid repeated freeze-thaw cycles.

Shipment

—1x lyophilized vial (10mg)
—Certificate of Analysis (upon request)
—Storage instructions

02Research applications

Studied research areas.

Each item below names a domain in which TB-500 has been investigated in published research. Listed for context — not as a use recommendation.

01Actin-binding pathway research
02Thymosin beta-4 fragment studies
03Cytoskeletal dynamics analysis
04Cellular structural signaling research

03Quality & verification

Held to research-grade quality standards.

Every batch is held to research-grade quality standards before it ships. Each vial is labeled with its batch identifier so that fulfillment can be traced through the order record. For our research-use-only posture, see the Research Compliance page.

04Frequently asked

Common questions for TB-500.

For research use only. Not for human consumption.

These products are not intended to diagnose, treat, cure, or prevent any disease. They are sold strictly as research chemicals for laboratory use.

Fulfillment: Orders ship from Texas via USPS within 2 weeks of payment confirmation. You'll receive tracking by email when your package leaves our facility.

Researcher reviews

Reviews open as orders are delivered.

Only researchers who've received an order of this compound can submit a review. Submitted text is screened for compliant language before publication. No anonymous testimonials, no AI-generated copy.

Pending researcher reviews

Reviews appear here as researchers complete and verify orders.

If you've received this compound and would like to leave a review, the option appears in your account dashboard once your order ships.

05Continue researching