Figure 1. LC-MS/MS chromatogram and mass spectrometry of Danggui-Shaoyao-San (DSS). (A–E) Retention time, chromatogram, and mass spectrogram of ferulic acid (A), paeoniflorin (B), ligustilide (C), atractylenolide I, (D) and alisol B 23-acetate (E) in DSS.