Research Article

Analysis of the Correlation between Commodity Grade and Quality of Angelica sinensis by Determination of Active Compounds Using Ultraperformance Liquid Chromatography Coupled with Chemometrics

Figure 3

The UPLC chromatograms of reference standards (a) and different commercial grades A. sinensis samples (b). (1) Ferulic acid. (2) Senkyunolide A. (3) n-Butylphthalide. (4) Ligustilide. (5) Butylidenephthalide.
143286.fig.003a
(a)
143286.fig.003b
(b)