Fig. 3
Superimposed HPLC–DAD chromatograms of fractions collected from prep HPLC and concentrated as oxalate salts. CA cathinone, NPE norpseudoephedrine or cathine, NE norephedrine
Fig. 3 | Chemistry Central Journal
Superimposed HPLC–DAD chromatograms of fractions collected from prep HPLC and concentrated as oxalate salts. CA cathinone, NPE norpseudoephedrine or cathine, NE norephedrine