Fig. 2From: Preparation and structural determination of four metabolites of senkyunolide I in rats using ultra performance liquid chromatography/quadrupole-time-of-flight tandem mass and nuclear magnetic resonance spectraChromatograms for the analysis of the four metabolites of SEI in rat bile. (A) HPLC-UV chromatograms of control bile; (B) HPLC-UV chromatograms of M1-M4 and SEI standards without bile; (C) Bile samples from rats after oral administration 100 mg/ml of SEIBack to article page