AvailableView product →BPC-157 / TB-500 blend
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TB-500
TB-500 is the N-terminally acetylated seven-residue thymosin β4 fragment Ac-LKKTETQ-OH. The free base and acetate are distinct material forms and must not be represented interchangeably.
Scientific referenceAvailableLot data pending
Objective technical summary
FDA describes TB-500 free base as the synthetic thymosin β4 residues 17–23 fragment with an acetyl group on the N-terminal leucine. FDA reports no identified human administration data and insufficient clinical and nonclinical safety information.
Catalog numberMOLT–TB500–REF
CAS number885340-08-9 (free base)
Molecular formulaC₃₈H₆₈N₁₀O₁₄ (free base)
Molecular weight889.01 g/mol (free base)
Amino-acid sequenceAc-LKKTETQ-OH
Form10 mg research-use vial
Purity statusLot-specific result — see the selected batch record
Purity methodReported on the lot-specific analytical record
Identity methodReported on the lot-specific analytical record
Regulatory statusNot FDA approved. FDA identifies the LKKTETQ thymosin β4 fragment as a Category 2 bulk substance with unresolved safety concerns.
StorageNo product-specific storage specification is attached. Use only the approved SDS and supplier documentation for the exact material and salt form.
Primary scientific and regulatory references
Scientific record reviewed 2026-07-13.
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