Fig. 3From: Preparative HPLC for large scale isolation, and salting-out assisted liquid–liquid extraction based method for HPLC–DAD determination of khat (Catha edulis Forsk) alkaloidsSuperimposed HPLC–DAD chromatograms of fractions collected from prep HPLC and concentrated as oxalate salts. CA cathinone, NPE norpseudoephedrine or cathine, NE norephedrineBack to article page