Hidrosmin is a flavone, a type of flavonoid. It is classified as a flavone. Tricetin is a flavone, a type of flavonoid. It is an O-methylated flavone, a type of flavonoid. Genkwanin is an O-methylated flavone, a type of flavonoid. Liquiritin is one of flavone compounds derived from licorice. Scutellarin is a flavone, a type of phenolic chemical compound. Orientin is a flavone, a chemical flavonoid-like compound. Luteolin is a flavone, a type of flavonoid, with a yellow crystalline appearance. Apigenin is biosynthetically derived from the general phenylpropanoid pathway and the flavone synthesis pathway. Hispidulin is a naturally occurring flavone with potential antiepileptic activity in rats and gerbils. Tricine is photo-oxidised by flavins, and therefore reduces the activity of flavone enzymes at daylight. Three flavonolignans derived from the flavone tricin have been isolated from the herb "Avena sativa". It is an "O"-methylated flavone that has the activity to rescue bulbectomy-induced memory impairment. Chrysoeriol is a flavone, chemically the 3'-methoxy derivative of luteolin.