Columns : Shodex Asahipak ODP-50 6D, ODS(6.0mmID*150mm each) Eluent : 0.05% TFA aq./CH3CN Linear gradient: 0 to 30min, 90/10 to 40/60 Flow rate : 1.0mL/min Detector : UV(280nm) Column temp. : 30℃