TB-500
TB-500 is a synthetic fragment of the naturally-occurring protein Thymosin Beta-4. Research has focused on its potential role in cell migration, vascular development, and tissue repair — particularly in muscle and cardiac tissue recovery.
Also known as: Thymosin Beta-4 Fragment, TB4 Fragment
Technical information
Molecular weight
4963.5 g/mol
Half-life
~2 days
Sequence
Ac-SDKPDMAEIEKFDKSKLKKTETQEKNPLPSKETIEQEKQAGES
Common research doses
2-5 mg/week (research protocols)
Research areas
For research purposes only. PepAssure provides vendor information as a verification service and does not endorse or recommend any specific use. Consult qualified research protocols and institutional review boards.
Best Verified Vendors for TB-500
Ranked by PVS score — independent verification, no paid placements.
USA · 99.4% reported purity · 62+ CoAs
Canada · 99.4% reported purity · 58+ CoAs
Canada · 99.4% reported purity · 130+ CoAs
Canada · 99.3% reported purity · 58+ CoAs
Canada · 99.3% reported purity · 114+ CoAs
EU · 99.3% reported purity · 131+ CoAs
UK · 99.3% reported purity · 148+ CoAs
EU · 99.2% reported purity · 99+ CoAs
USA · 99.2% reported purity · 134+ CoAs
International · 99.2% reported purity · 61+ CoAs
USA · 99.2% reported purity · 97+ CoAs
USA · 99.2% reported purity · 97+ CoAs
USA · 99.2% reported purity · 135+ CoAs
USA · 99.2% reported purity · 73+ CoAs
UK · 99.1% reported purity · 116+ CoAs
USA · 99.1% reported purity · 86+ CoAs
EU · 99.1% reported purity · 67+ CoAs
USA · 99.1% reported purity · 137+ CoAs
International · 99.0% reported purity · 53+ CoAs
UK · 99.0% reported purity · 140+ CoAs
Canada · 99.0% reported purity · 42+ CoAs
USA · — reported purity · 26+ CoAs
Competitive landscape
Multi-signal comparison of every verified vendor selling TB-500 — PVS, purity, CoA cadence, sentiment, and 30-day momentum.
Market overview
Aggregate signals across vendors selling TB-500
Side-by-side comparison
All verified vendors selling TB-500. Click a column header to sort. ★ marks the leader on that column.
| Vendor | PVS | Purity | CoAs | Sentiment | 30d Δ | Lab | Price |
|---|---|---|---|---|---|---|---|
| 1Genetic Peptides USA | ★94 | — | ★0 | ★93 | — | Janoshik | $ |
| 2Paradigm Peptides | ★94 | — | ★0 | ★93 | — | Janoshik | $$$ |
| 3Ascension Peptides | 93 | — | ★0 | 92 | — | Janoshik | $$$ |
| 4Limitless Life Nootropics | 92 | — | ★0 | 91 | — | Janoshik | $$ |
| 5Amino Asylum | 91 | — | ★0 | ★93 | — | Janoshik | $ |
| 6Sports Technology Labs | 90 | — | ★0 | 90 | — | Janoshik | $ |
| 7Swiss Chems | 89 | — | ★0 | 88 | — | Janoshik | $ |
| 8Trident Peptides | 88 | — | ★0 | 89 | — | Janoshik | $$ |
| 9Core Peptides | 87 | — | ★0 | 88 | — | Janoshik | $$$ |
| 10Peptide Sciences | 86 | — | ★0 | 85 | — | Janoshik | $$ |
| 11Pure Rawz | 85 | — | ★0 | 86 | — | Janoshik | $ |
| 12Loti Labs | 85 | — | ★0 | 84 | — | Janoshik | $ |
| 13Biotech Peptides | 84 | — | ★0 | 83 | — | Janoshik | $$ |
| 14Science.bio | 83 | — | ★0 | 82 | — | Janoshik | $ |
| 15Blue Sky Peptide | 83 | — | ★0 | 82 | — | Janoshik | $ |
| 16Behemoth Labz | 82 | — | ★0 | 84 | — | Janoshik | $$$ |
| 17Pure Peptides USA | 81 | — | ★0 | 80 | — | Janoshik | $$ |
| 18Chemical Planet | 80 | — | ★0 | 81 | — | Janoshik | $$ |
| 19Modern Aminos | 80 | — | ★0 | 81 | — | Janoshik | $ |
| 20Direct Peptides | 79 | — | ★0 | 80 | — | Janoshik | $$ |
| 21PepChem | 77 | — | ★0 | 78 | — | Janoshik | $ |
| 22Peptiva Research Labs | 0 | — | ★0 | 0 | — | Janoshik | $$$ |
Pillar leaders
Top-scoring vendor on each of the five PVS pillars
Recent purity track record
Approved community CoAs for TB-500, newest first