Molecular Formula: C₃₈H₆₈N₁₀O₁₄
Molecular Weight: 889.01 g/mol
CAS Number: N/A (Research peptide) TB-500 does not have an official CAS number, because it is a synthetic peptide fragment rather than a single registered chemical entity.
Peptide Length: 7 amino acids / The phrase “17–23 fragment” refers to its position within thymosin beta-4—amino-acid residues 17 through 23—which totals seven amino acids.
Sequence: Ac-LKKTETQ

COA (Certificate of Analysis): TB-500 COA 99.25

Purity: +99.1% HPLC

Product video:

TB‑500 is a research peptide derived from the actin‑binding region of thymosin beta‑4, studied for its roles in cell migration, tissue repair, and angiogenesis.
TMSB4X vs TB‑500 — Clear, Structured Comparison
🧩 1. What each one actually is

TMSB4X (Thymosin β4) A full‑length, 43‑amino‑acid human peptide encoded by the TMSB4X gene. It is naturally present in almost every human cell and plays roles in cell migration, wound repair, angiogenesis, and inflammation modulation.

TB‑500 is a synthetic 7‑amino‑acid fragment (the “active region”) of Thymosin β4. It is designed to replicate the actin‑binding and tissue‑repair functions of the parent peptide.

Search results highlight its involvement in wound‑healing pathways, inflammation modulation, and recovery models across muscle, tendon, ligament, and soft‑tissue research.
How TB‑500 Works (Research Context)Actin regulation: TB‑500 is derived from the actin‑binding domain of thymosin beta‑4, which influences cell structure and movement.Enhanced cell migration: Research shows it promotes movement of repair cells to injury sites.
Angiogenesis: Studies highlight its role in stimulating new blood‑vessel growth, a key factor in tissue recovery.Inflammation modulation: TB‑500 is frequently used in models exploring reduced inflammatory responses.

What the Search Results Emphasize
TB‑500 is linked to healing, cell growth, and cell migration.Research summaries describe tendon, ligament, and muscle recovery models.
It is consistently framed as a tissue‑repair and regeneration peptide rather than a metabolic or hormonal one.
To reconstitute a peptide blend, follow these steps:Disinfect both vials and the stoppers with alcohol wipes.Measure the required amount of BAC water based on the dosage.
Mix the peptide powder with the measured BAC water in a sterile syringe.
Inject the solution into the vial and refrigerate at 2–8°C, protected from light.
Use the reconstituted solution within 4 weeks for best potency and safety.

Legal and Safety Information;
Quantum Peptides products are provided exclusively for laboratory research and educational use.
They are not approved for human or veterinary applications.
These materials are not intended to diagnose, treat, cure, or prevent any medical condition.
All use must adhere to applicable laws and regulatory requirements.

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