Definition
Peptides are short chains of amino acids joined by peptide bonds — typically ranging from two to roughly fifty residues. They occupy a molecular space between free amino acids and full proteins.
Key Characteristics
- Sequence: the exact order of amino acids determines identity and behavior.
- Molecular weight: typically 200–5,000 g/mol for research peptides.
- Purity: expressed as a percentage determined by analytical methods such as HPLC.
Why Purity and Identity Matter
For reproducible research, documented purity and sequence verification are essential. A certificate of analysis (COA) should state the analytical method, batch number, and measured results.
Products discussed here are intended for research purposes only.
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