GenScript purifies and analyzes its synthetic peptides using reverse-phase and ion exchange HPLC. Ion exchange HPLC is employed when reverse-phase HPLC is inapplicable, such as in the purification of very long peptides or large quantities of peptides.
The impurities are most likely salts and water, solvents, TFA, deletion, truncation, incompletely deprotected sequences, etc.
