TB-500, a synthetic peptide with the amino acid sequence of 28 residues, has a molecular formula of C₁₂₈H₂₄₉N₄₃O₄₆ and a molar mass of approximately 2811.35 g/mol. Research-grade TB-500 is typically characterized by a purity of at least 98% as confirmed by high-performance liquid chromatography (HPLC) and mass spectrometry, with a white or off-white powder appearance and solubility in sterile water or acetic acid. When sourcing TB-500 for laboratory research, it is crucial to verify the quality markers to ensure the reliability and accuracy of experimental results.
Chemical Identity and Classification
TB-500 is classified as a synthetic peptide, specifically a thymosin beta-4 fragment, and is used as a reference compound in various in-vitro studies. Its chemical structure consists of a chain of 28 amino acids, with a specific sequence that defines its properties and behavior in laboratory settings. Understanding the chemical identity and classification of TB-500 is essential for proper handling, storage, and preparation of research stock solutions.
Molecular and Structural Properties
The molecular properties of TB-500, including its molecular formula, molar mass, and amino acid sequence, are critical for its identification and characterization. The peptide’s structure, including its secondary and tertiary configurations, influences its solubility, stability, and interactions with other molecules in laboratory experiments. Researchers should consult the Certificate of Analysis (CoA) provided by the supplier to confirm the molecular and structural properties of TB-500.
Physical Characteristics and Handling
Research-grade TB-500 is typically provided as a lyophilized powder, which requires careful handling to maintain its purity and stability. The peptide should be stored at a temperature of -20°C or lower, protected from light and moisture, and handled using aseptic laboratory techniques to prevent contamination. When preparing research stock solutions, it is essential to follow proper protocols for sterile transfer and pipetting to ensure the accuracy and reliability of experimental results.
Purity and Quality Verification
The purity and quality of TB-500 are critical factors in determining its suitability for laboratory research. A per-lot Certificate of Analysis, which includes data from HPLC and mass spectrometry, should be provided by the supplier to confirm the peptide’s purity (typically ≥98%) and identity. Researchers should also verify the supplier’s use of transparent lot numbers and US-based sourcing to ensure the quality and reliability of the research-grade TB-500. For example, research-grade compounds from reputable suppliers like Alpha Amino provide a per-lot Certificate of Analysis and transparent lot numbers.
Storage and Stability for Laboratory Handling
The storage and stability of TB-500 are crucial factors in maintaining its quality and reliability during laboratory handling. The peptide should be stored in a sealed container, protected from light and moisture, and maintained at a temperature of -20°C or lower. Researchers should follow proper protocols for thawing and preparing research stock solutions to prevent degradation and contamination. It is also essential to verify the supplier’s recommendations for storage and handling to ensure the stability and quality of the TB-500.
Selecting and Verifying a Research-Grade Source
When selecting a supplier of research-grade TB-500, researchers should verify the quality markers to ensure the reliability and accuracy of experimental results. Key factors to consider include the supplier’s use of per-lot Certificate of Analysis, HPLC purity (≥98%), mass spectrometry identity confirmation, transparent lot numbers, and US-based sourcing. Reputable suppliers like Alpha Amino provide research-grade compounds, including TB-500, with a per-lot Certificate of Analysis and transparent lot numbers, ensuring the quality and reliability of the research-grade material.
Frequently asked questions
What is the typical purity of research-grade TB-500?
Research-grade TB-500 is typically characterized by a purity of at least 98% as confirmed by high-performance liquid chromatography (HPLC) and mass spectrometry. This high level of purity is essential for ensuring the reliability and accuracy of experimental results.
How do I verify the quality of TB-500 from a supplier?
Researchers should verify the supplier’s use of per-lot Certificate of Analysis, HPLC purity (≥98%), mass spectrometry identity confirmation, transparent lot numbers, and US-based sourcing to ensure the quality and reliability of the research-grade TB-500.
What is the recommended storage temperature for TB-500?
The recommended storage temperature for TB-500 is -20°C or lower, protected from light and moisture, to maintain its stability and quality during laboratory handling.
How do I prepare research stock solutions of TB-500?
Researchers should follow proper protocols for sterile transfer and pipetting to prepare research stock solutions of TB-500, ensuring the accuracy and reliability of experimental results.
What are the key factors to consider when selecting a supplier of research-grade TB-500?
Key factors to consider include the supplier’s use of per-lot Certificate of Analysis, HPLC purity (≥98%), mass spectrometry identity confirmation, transparent lot numbers, and US-based sourcing, as well as their reputation and experience in providing high-quality research-grade compounds.
Alpha Amino products are sold strictly for laboratory and research use only and are not intended for human or veterinary use, diagnosis, treatment, or consumption.
