C21H24O11

The molecular formula C21H24O11 (molar mass: 452.41 g/mol, exact mass: 452.131862 u) may refer to:


 * Aspalathin, a dihydrochalcone glucoside
 * Catechin-5-O-glucoside, a flavan-3-ol glucoside
 * Catechin-7-O-glucoside, a flavan-3-ol glucoside