TB-500 (TB4)
Price range: $49.98 through $65.98
White solid. CAS 77591-33-4, MW 4963.4. Reconstitute with bacteriostatic water. Purity 99.75% by RP-HPLC. Research use only — not for human or veterinary use.
TB-500 (TB4) is a thymosin β-4 / synthetic fragment supplied by Nano Aminos strictly as a reference material for in-vitro and laboratory research. It is catalogued under CAS 77591-33-4, molecular formula C212H350N56O78S, and a molecular weight of 4963.4 g/mol.
Provided as a lyophilized powder (white solid), TB-500 (TB4) is part of the Nano Aminos Repair & Recovery research range and is prepared for research use by reconstitution in bacteriostatic water using standard aseptic technique.
Every production lot is characterized by reversed-phase HPLC and mass spectrometry at 99.75% typical HPLC purity and ships with a lot-specific Certificate of Analysis (COA), so identity and purity can be independently confirmed before use. Vials are kept cold and protected from repeated freeze–thaw cycles. TB-500 (TB4) is available in 5 mg and 10 mg research sizes.
Related research: browse the full Repair & Recovery category or compare KLOW (TB+BPC+KPV+GHK) and Thymalin.
For research use only. Not for human or veterinary use. TB-500 (TB4) is not a drug, food, or dietary supplement.
| Compound | TB-500 (TB4) |
|---|---|
| Classification | Thymosin β-4 / synthetic fragment |
| CAS number | 77591-33-4 |
| Molecular formula | C212H350N56O78S |
| Molecular weight | 4963.4 g/mol |
| Purity | 99.75% by RP-HPLC (area %) |
| Physical form | Lyophilized powder |
| Appearance | White solid |
| Reconstitution | Bacteriostatic water |
Each production lot is released against an analytical specification and ships with the corresponding Certificate of Analysis.
TB-500 (TB4) 5 mg
Lot 262557853- Purity (HPLC-UV)
- 99.75%
- Identity (LC-MS)
- Confirmed
- Net content
- 5.55 mg/vial
- Appearance
- White to off-white lyophilised powder
- Method
- HPLC-UV with LC-MS confirmation
- Reported
- 6 Aug 2026
- Accession
- AD-5061-5699-3069
Opens on this page. Analysis by an independent laboratory. Research use only - not for human or veterinary use.
Storage. Store lyophilized material at -20°C protected from light and moisture for long-term stability. After reconstitution, keep at 2-8°C and use within the documented in-use window.
Handling. Allow sealed vials to equilibrate to room temperature before opening to limit condensation. Reconstitute with the listed diluent using standard aseptic laboratory technique. Avoid repeated freeze-thaw cycles.
Safety. Handle as a laboratory research chemical. Wear appropriate PPE and follow your institution's chemical-handling and waste-disposal procedures.
Dispatch. In-stock orders are processed on business days and shipped with temperature-controlled packaging and gel packs to preserve material integrity in transit.
Tracking. A tracking reference is issued at dispatch. Lab accounts can consolidate shipments and arrange standing orders.
Eligibility. Orders are accepted from researchers, resellers and institutions for laboratory research use only.
Literature referencing this compound.
Publications relevant to this molecule, provided for research reference. Inclusion does not imply an approved use or any claim about the products sold here.
Background reading on peptide chemistry and handling.
- Peptides explained Structure, nomenclature and how peptides differ from proteins
- Peptide bond chemistry How the amide backbone forms and what makes it stable
- How peptides are synthesised Solid-phase synthesis, cleavage and purification
- Storage and stability Lyophilised handling, reconstitution and freeze-thaw limits
- Research applications Where these compounds appear in the published literature
- Publication library Indexed citations with DOI links
