TB-500 10mg
A synthetic peptide corresponding to the actin-binding region of thymosin beta-4. Studied in cell-migration and tissue-model literature.
Also cataloged as Thymosin Beta-4, TB4, Tbeta-4 fragment.
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Research use only. Not for human or veterinary use. Not a drug, food, supplement, cosmetic or medical device. Nothing on this page is medical advice.
Size ladder and price per milligram
The 10mg vial is the only size we carry for TB-500. Its list price is $39.99, or $4.00/mg.
Where this price sits
The lowest competitor figure in our snapshot is Kylo at $34.98 ($3.50/mg) after a $697 lifetime fee. Effect's lowest published price is $39.99 ($4.00/mg) as a list price. Kylo is $5.01 lower on the vial. See the full comparison method.
Competitor prices observed 2026-09-15 at a matched vial mass. Reproduced as observations of published pricing, not as statements about another company's products.
Bulk tiers on this vial
| Quantity | Discount | Per vial | Effective $/mg |
|---|---|---|---|
| 1–2 vials | — | $39.99 | $4.00/mg |
| 3+ vials | 10% | $35.99 | $3.60/mg |
| 10+ vials | 25% | $29.99 | $3.00/mg |
| 25+ vials | 35% | $25.99 | $2.60/mg |
Public bulk tiers apply to eligible order requests. Bulk pricing in full.
Blends containing TB-500
TB-500 is co-lyophilized into Wolverine Blend, GLOW Blend, KLOW Blend. A blend has no meaningful price per milligram, because the milligrams are not all the same substance — compare a blend against the cost of buying its components separately, which is the arithmetic we show on each stack page.
| Compound | TB-500 |
|---|---|
| Also cataloged as | Thymosin Beta-4, TB4, Tbeta-4 fragment |
| CAS number | 77591-33-4 |
| Molecular formula | C212H350N56O78S |
| Molecular weight | 4963.4 g/mol (free acid) |
| Sequence | Ac-SDKPDMAEIEKFDKSKLKKTETQEKNPLPSKETIEQEKQAGES-OH (43 amino acids) |
| Physical form | Sterile freeze-dried powder |
| HPLC purity | guaranteed 98% or higher; the lot certificate states the measured figure |
| Fill | guaranteed at least 90% of the labeled mass; the lot certificate states the measured figure |
| Testing laboratory | Sterigenix |
| COA test date | 2026-07-20 |
Chemistry is verifiable against public registries. The supply-record purity and mass summary below is separate from a public printed-lot match.
Laboratory handling information for material in storage. Not a preparation procedure and not for use.
- Ships at ambient temperature; stable as lyophilized powder in transit.
- Store the sealed vial cold and dark on receipt.
- Aliquot rather than repeatedly freezing and thawing one vial.
- Powder is markedly more stable than material in solution.
Purity and mass for this size
This is a summary of the supply record, not a claim that the lot identifier printed on an Effect vial has been publicly cross-matched. Check the printed identifier against the private source record before fulfillment.
| Labeled mass | Measured mass | Recorded purity | Laboratory | Test date | Record |
|---|---|---|---|---|---|
| 10 mg | 9.92 mg | 99.26% | Sterigenix | 2026-07-20 | Current |
"Not reported" means this supply record has no measured-content value. No report PDF, verification credentials or private identifiers are published. See the result library.
What the supplied reports measured
These owner-supplied sample records were cataloged separately from the current supply snapshot. Some figures may overlap that snapshot; a matching number does not establish a second test or a printed-vial match. Rows are never averaged to fill a missing current value.
| Result | Measured mass | Reported purity |
|---|---|---|
| Record 1 | 9.92 mg | 99.26% |
"Not reported" means the source did not give a measured peptide-content value. Blend rows show component masses where the source reported them, not a whole-vial mass. See the complete public summary.
Questions about TB-500 10mg
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A co-lyophilized blend of BPC-157 and TB-500 in a single vial, split evenly by mass.