481-53-8 4H-1-Benzopyran-4-one, 5,6,7,8-tetramethoxy-2-(4-methoxyphenyl)- 4H-1-Benzopyran-4-one, 5,6,7,8-tetramethoxy-2-(p-methoxyphenyl)- Flavone, 4',5,6,7,8-pentamethoxy- NSC53909 Pentamethoxyflavone Ponkanetin Tangeretin Tangeritin