C21H21ClO11

The molecular formula C21H21ClO11 (molar mass: 484.84 g/mol, exact mass: 484.0772 u) may refer to:


 * Chrysanthemin chloride (Cyanidin 3-O-glucoside chloride)
 * Ideain chloride (Cyanidin 3-O-galactoside chloride)