C21H20O11

The molecular formula C21H20O11 (molar mass: 448.38 g/mol, exact mass: 448.100561 u) may refer to:


 * Astragalin, a flavonol
 * Cynaroside, a flavone
 * Kaempferol 7-O-glucoside, a flavonol
 * Isoorientin, a flavone
 * Maritimein, an aurone
 * Orientin, a flavone
 * Quercitrin, a flavonol
 * Rhodionin, a flavonol rhamnoside
 * Trifolin, a flavanol galactoside