Source comparison
TB-500 Better Than TB500: Side-by-Side Comparison
Before evaluating supplier-specific differences, it's important to recognize that TB-500 and TB500 represent the same molecular entity under different naming conventions. The comparison below examines what factors actually differentiate one TB-500/TB500 produc
This comparison does not assign a generated winner or score.
- Before evaluating supplier-specific differences, it's important to recognize that TB-500 and TB500 represent the same molecular entity under different naming conventions. The comparison below examines what factors actually differentiate one TB-500/TB500 product from another. Because the peptide's research utility depends on synthesis quality, not label formatting.
- Amino Acid Sequence
- 43-residue fragment of Thymosin Beta-4 (residues 1–43)
- Identical molecular structure when synthesized correctly. Naming convention doesn't alter the peptide chain
- Synthesis Method
- Solid-phase peptide synthesis (SPPS) via Fmoc chemistry (standard for research-grade suppliers)
- Both use the same synthesis protocol when produced by compliant facilities. Method matters more than label
- Typical Purity Range
- 95–99.5% via HPLC (depends on supplier quality control standards)
- Purity varies by supplier, not by naming convention. A 98.5% TB-500 equals a 98.5% TB500
- Certificate of Analysis Availability
- Provided by reputable suppliers (HPLC, MS, endotoxin testing)
- CoA documentation is supplier-specific. Hyphenation in the product name doesn't correlate with testing rigor
- Storage Requirements
- Lyophilized: −20°C for 12–24 months; Reconstituted: 2–8°C for 28 days
- Storage stability is identical. Both degrade at the same rate under improper conditions
- Research Application Range
- Cell migration studies, actin dynamics research, tissue repair models
- Functional application is determined by the peptide itself, not the naming format on the vial