Thymosin Beta-4 (TB-500) 5mg
For Research Use Only
Popular -30% OFF
≥98%
HPLC Verified
COA
Every Batch
USA
Jessup, PA
Healing & Recovery / Tissue Repair

Thymosin Beta-4 (TB-500) 5mg

Research Grade

Synthetic Thymosin Beta-4 — the 43-amino acid actin-sequestering peptide naturally elevated after injury, providing systemic wound healing, angiogenesis, and cardiac repair signals.

≥98% Purity COA Included Cold Pack Shipping Same-Day Ship
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★ ★ ★ ★ ☆ 4.3 · 13 reviews
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$42.83
$47.59
Purity
≥98%
Weight
5mg
CAS
77591-33-4
Formula
C212H350N56O78S
Form
Sterile Lyophilized Powder
Vial
3 mL Multi-Dose Vial

Product Overview

TB-500 is the synthetic form of the naturally occurring peptide Thymosin Beta-4 (Tβ4), a 43-amino-acid protein first isolated from bovine thymus gland. Tβ4 is one of the most abundant intracellular peptides in mammalian cells and is found at especially high concentrations in platelets, white blood cells, and wound fluid — indicating a fundamental role in the body's endogenous repair response. TB-500 refers specifically to the active fragment Ac-SDKP derived from the Tβ4 sequence, though commercial preparations typically contain the full-length synthetic peptide. It is widely studied for its roles in actin cytoskeleton regulation, angiogenesis, and systemic wound healing, and has been detected at elevated levels following tissue injury across species.

Methodology Note: This product summary references published preclinical and clinical research. 22EXO does not make therapeutic claims. All compounds are sold strictly for laboratory and research applications.

Disclaimer: This product is sold for research and laboratory use only. Not for human consumption. By purchasing, you agree to our terms of service and confirm that this product will only be used for legitimate research purposes.

Customer Reviews

★ 4.3 · 13 reviews
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Wound-healing assay supplier
by Dr. F. Acharya · 2026-05-09 · ✓ Verified
★★★★★

Used in a series of full-thickness rat wound experiments. Activity is consistent across the lots we've tested. Documentation is detailed.

tb500 quality
by anon · 2026-05-02 · ✓ Verified
★★★★★

good. clean. fast. nothing else

Good product, MS peak as expected
by T. Nakamura · 2026-05-01 · ✓ Verified
★★★★☆

Mass spec showed expected molecular weight (4963 Da). Purity ran 98.7 on our HPLC, which is essentially identical to the supplier COA. Slight star deduction only because 22EXO ships in foam-only packaging, which I prefer over bubble wrap, but I think they should add a desiccant pack for thermolabile products like TB-500 even though stability data says lyophilized form is fine at ambient for short windows.

did the job
by anon · 2026-05-01 · ✓ Verified
★★★★★

what more do you want me to say

Better packaging than ___ (rhymes with peptide warehouse)
by S. Aldrich · 2026-05-01 · ✓ Verified
★★★★★

I won't name names but the prior vendor I used shipped these in zip baggies. 22EXO uses real cold packs and sealed boxes. Night and day.

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Resources

For research use only. Not for human consumption. Not approved by the FDA for any therapeutic indication. By purchasing, you confirm that this material will be used solely for in-vitro research purposes by qualified researchers.