Fig. 4From: Enhancement of teprenone isomer separation by subcritical fluid chromatography using porous graphitic carbon columnSubFC/PDA chromatograms of teprenone isomers: (A) ethanol, (B) excipient (placebo), (C) excipient spiked with teprenone isomers, (D) GC/FID chromatogram using packed column for teprenone assay, and (E) HPLC/UV chromatogram at dissolution test of teprenone capsulesBack to article page