Peptide Synthesis Custom-made Peptide Synthesis Services
Achieve Highly Pure Peptides With High Performance Flash Chromatography After synthesis and purification, peptides are typically lyophilized (freeze-dried) as salts. The most common counterion is trifluoroacetate (TFA) from the HPLC filtration solvents, though some peptides are supplied as acetate or hydrochloride salts. These counterions aren't "impurities" in the HPLC sense-- they don't appear as different peaks-- but they do add to the total mass of the powder. For a 10-