350964.fig.007a
(a)
350964.fig.007b
(b)
Figure 7: Qualitative and quantitative HPLC analysis of standard materials in EOK. The retention time of the peak 1, peak 2 (oxypeucedanin hydrate), peak 3, peak 4, peak 5 (imperatorin), and peak 6 (isoimperatorin) was 2.04 min, 3.26 min, 5.35 min, 6.57 min, 10.99 min, and 15.02 min, respectively.