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  • 🇺🇸 USA Domestic
  • Warehouses
    • 🇪🇺 EU Domestic
    • 🇦🇺 AU Domestic
    • 🇨🇦 CA Domestic
    • 🇨🇳 CH Direct
  • Research Compounds
    • QSC Protocols
      • Clavicular Ascension
      • Venus Protocol
      • Midas Longevity Protocol
    • Research Peptides
      • Anti-Aging & Longevity Peptides
      • Cognitive & Nootropic Peptides
      • Cosmetics Peptides
      • Performance & Hormone Optimization Peptides
      • Recovery & Healing Peptides
      • Weight Loss & Metabolic Peptides
    • Peptide Blends
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  • QSC
    • About QSC
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FREE standard shipping on all orders.
≥99% Purity Verified • COA on Every Product
Free Shipping • USPS/FedEx in USA 🇺🇸
Domestic Warehouses: 🇺🇸 🇪🇺 🇬🇧 🇦🇺 🇨🇦

TB-500 20mg | 20-Vial Kit | Thymosin Beta-4

QSC TB-500 (Thymosin Beta-4 fragment) — ≥99% HPLC purity, MS confirmed, Janoshik COA. Research use only.

✓ 99%+ Purity ✓ COA Available
✓ Free Shipping on All Orders ✓ Domestic Warehouses (USA/EU/UK/AU/CA)

$730

or
SKU: QSC-TB500-20MG-20VIAL
Categories: China, Clavicular Peptides, Midas Longevity Protocol, Recovery & Healing Peptides, Research Peptides, United States, Venus Protocol
Brand: QSC
Technical Specs & COA
PubMed
Disclaimer & Storage Guide

QSC RESEARCH GRADE

≥99% HPLC PurityMS ConfirmedJanoshik COAIn-House SPPS5-Region Domestic Shipping

What is TB-500?

TB-500 (Thymosin Beta-4 fragment (Ac-LKKTETQ)) is a 7-amino acid synthetic fragment. Sequesters G-actin to promote cell migration, activates an independent VEGF-mediated angiogenesis pathway, and modulates NF-κB to reduce inflammatory signalling. Non-overlapping with BPC-157 — complementary repair targets.

Research Applications

Cell Migration & Wound Repair

Actin sequestration enabling directed fibroblast/endothelial migration

Independent Angiogenesis

VEGF pathway activation distinct from BPC-157 NO/VEGF axis

Anti-Inflammatory

NF-κB modulation and inflammatory cytokine reduction

Cardiac Repair

Cardiomyocyte protection and cardiac tissue healing models

Muscle Repair

Skeletal muscle satellite cell activation and regeneration

Quick Specs

Form Lyophilized powder
Purity ≥99% by HPLC — every batch
CAS Number Not officially assigned (synthetic peptide fragment)
Molecular Formula C₂₁₂H₃₅₀N₅₆O₇₈S
Peptide Type Synthetic Thymosin Beta-4 Fragment (Peptide)
Identity MS molecular weight confirmed — every batch
COA Janoshik-independent, publicly verifiable
Manufacture In-house Fmoc SPPS — Qingdao, China
Storage -20°C sealed | 2–8°C reconstituted (2–4 weeks)
Shelf Life 24 months unopened

Certificate of Analysis (COA)

QSC COA Report

✓ Verify on Janoshik ↗

🧪 Peptide Research Tools: Use QSC’s free peptide calculators — reconstitution, BAC water, dosing, half-life, and mixing charts.
🌍 Domestic shipping: 🇺🇸 USA  ·  🇪🇺 EU  ·  🇬🇧 UK  ·  🇨🇦 Canada  ·  🇦🇺 Australia
🧬 PubMed Research — 20mg
Search PubMed ↗
1,472 publications found Last 10 years 3 most recent shown
41882454
Hospital-Compounded Birabresib Capsules for NUT Carcinoma: A Quality- and Risk-Based CMC Strategy.
Annereau M et al. · Pharm Res 2026 View ↗
41730373
Quantitative disintegration profiling using real-time erosion tracking during the standard USP〈701〉 test.
Lee J et al. · Int J Pharm 2026 View ↗
41819555
Baru (Dipteryx alata) nut oil attenuates amyloid-β-induced cognitive deficits by modulating neuroinflammation and BDNF signaling pathway.
Martins WC et al. · Nutr Neurosci 2026 View ↗

Showing 3 of 1,472 for 20mg

View all on PubMed ↗

Source: PubMed / NCBI  ·  Last 10 years  ·  Refreshed every 24 hours  ·  For research reference only — not clinical guidance.

⚠️ RESEARCH USE ONLY — NOT FOR HUMAN CONSUMPTION

QSC products are strictly for in vitro and in vivo laboratory research. Not intended for diagnostic, therapeutic, or personal use.

📋

Research Use Disclaimer

All QSC products are strictly for laboratory, scientific, and research use only. They are not for human consumption, medical treatment, diagnosis, or disease prevention.

By purchasing or using QSC products, you confirm:

  • You are a qualified researcher or acting under the supervision of one.
  • Products will only be used for legitimate research purposes.
  • Products are not evaluated by the FDA or any regulatory authority for human use.
  • You assume all responsibility for legal compliance, proper handling, and storage.
  • You meet the legal age requirement in your jurisdiction.
No Warranty: Products are sold “as is,” with no express or implied warranties regarding efficacy, safety, or suitability. Results in research may vary. QSC is not responsible for outcomes, interpretations, or conclusions drawn from any studies conducted using these products.
🧪

General Safety & Handling

🚫

Not for Human Use

These compounds are for research only. Any off-label, personal, or clinical use is strictly outside the intended scope of supply.

🥽

PPE Required

Always use appropriate personal protective equipment (gloves, lab coat, eye protection) when handling peptides.

🌡️

Storage Compliance

Follow product-specific storage conditions to maintain identity, purity, and biological activity.

🗑️

Proper Disposal

Dispose of all materials in accordance with institutional biosafety, chemical waste, and hazardous material protocols.

🧾

Verify Quality

Janoshik COAs are available on every product page. Verify batch identity (MS confirmed) and purity (≥99% HPLC) before use.

❄️

Peptide Storage Guidelines

🌑 Light-protected💧 Low moisture🌡️ Stable temperature🔬 Sterile handling

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