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Thymosin Beta-4
Lab verified98.9% pureHPLC + Mass specEndotoxin tested
PS-203 · Tissue Repair & Recovery

Thymosin Beta-4

4.6 · 74 reviews

The full-length 43-amino-acid Thymosin β4 peptide, studied for actin regulation and regenerative signaling.

Read the Thymosin Beta-4 research guide→
$6012.00/mg
Vial size

In stock

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Frequently paired with
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    0.9% benzyl alcohol water for reconstitution, sold as a single vial.
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Molecular specification

Molecular formula
C212H350N56O78S
Molecular weight
4963.4 g/mol
CAS number
77591-33-4
Amino acids
43
Appearance
White lyophilized powder
Purity (HPLC)
98.9%
Elimination half-life
≈ 1–2 h

Mechanism & published research

Sequesters G-actin and modulates cell migration, angiogenesis, and inflammation in research models.

  • Regenerative and anti-inflammatory effects in preclinical models.

    animal modelrodent injury models·representative Tβ4 literaturePubMed ↗

Honest note on evidence: Evidence is largely preclinical.

Descriptions summarize existing published research and are not claims about outcomes from use. Every citation states its study type and population.

How it compares

VersusAttributeNote
TB-500LengthTB-500 is the active fragment; this is the full-length peptide.

Reconstitution

Concentration math only: add bacteriostatic water to the vial and the resulting concentration is shown below. This is not usage guidance.

VialBacteriostatic waterConcentration
5 mg2 mL2.5 mg/mL
10 mg2 mL5 mg/mL
Open the reconstitution calculator →

Storage & stability

StateTemperatureDuration
Lyophilized (unopened)-20°C24 months
Reconstituted2–8°Cup to 4 weeks

Reviews

4.6
Based on 74 verified purchases

Reviews are collected post-delivery and screened to exclude any human-use or dosing-outcome claims before publication. They speak to product quality, shipping, and COA accuracy.

Verified
“Cold-packed and tracked, arrived in good condition. Storage table on the page matched the COA notes.”
@tb.research · 2026-05-18
Read more verified reviews →

Product FAQ

Full-length vs TB-500?+

This is the complete 43-aa peptide; TB-500 is the active region. See the comparison note.