What is peptide purity?
The purity of GenScripts catalog peptides is usually about 95%. This means that 95% of the NET PEPTIDE content (but not total peptide content, see question 11) of the dry powder shipped to you is composed of your target peptide. The other 5% of the PEPTIDE material in your sample is usually composed of the so-called deletion sequences that sometimes co-purify with the target peptide. Deletion sequences are generated during peptide synthesis, when due to the slight inefficiencies of the coupling reaction some amino acids are skipped in some of the synthesized molecules. Purity is usually determined by reverse-phase HPLC.
