Analytical Methods Used for Research Peptides
- HPLC: separates components by hydrophobicity to determine percent purity.
- Mass spectrometry (MS): confirms molecular weight and sequence identity.
- Amino acid analysis: verifies composition ratios.
Reading a Certificate of Analysis
A COA should include batch number, product name and sequence, the measured purity with the method used, mass spectrometry results, storage instructions, and the date of analysis.
| Item | Typical Entry |
|---|---|
| Purity (HPLC) | ≥ 98% |
| Mass spectrometry | Observed m/z matches theoretical |
| Form | Lyophilized powder |
Industry & QualityMore in Industry & Quality