Table 1: Inhibitory activites of Wogon flavonoids and Gefitinib against A549 and PC9 cells.

IC50 (μM)
A549     PC9
Baicalin > 100 > 100
Baicalein 70.3 54.2
Wogonin 48.2 10.9
Oroxylin A 4.9 11.4
Galangin 61.7 46.8
Chrysin 29.1 14.4
Skullcap flavone II 51.4 30.5
Gefitinib 10.6 0.01