“…Methoxyl-flavone was found to have an IC 50 of ~15 µM [30]. On the other hand, flavonone had a very low activity with an IC 50 of ~250 µM [31]. Five flavonoids (eupatin, hispidulin, patuletin, nepetin, and isorhametin-3-O-glucoside) were isolated (1-5) and subsequently shown to be noncompetitive inhibitors of sEH, with k i values of 43.9, 19.8, 17.5, 63.5, and 68.7 µM, and IC 50 values against sEH of 42.6 ± 0.8, 22.2 ± 0.3, 12.1 ± 0.1, 40.9 ± 0.6, and 62.8 ± 1.8 µM, respectively.…”