Herbacetin is a flavonol compound, and a natural inhibitor of E.coli β-glucuronidase. Herbacetin inhibits inducible nitric oxide synthase via JNK and nuclear factor-κB in LPS-stimulated RAW264.7 cells. Molecular docking study of flavonoid compounds as an inhibitor of β-ketoacyl acyl carrier proteinsynthase II of Pseudomonas aeruginosa.