Mixed-mode hydrophilic interaction/cation-exchange chromatography: Separation of complex mixtures of peptides of varying charge and hydrophobicity

Mixed-mode hydrophilic interaction/cation-exchange chromatography (HILIC/CEX) was applied to the separation of two mixtures of synthetic peptide standards: (i) a 27-peptide mixture containing three groups of peptides (each group containing nine peptides of the same net charge of +1, +2 or +3), where...

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