7,8-dimethoxy-2-phenyl-2,3-dihydrochromen-4-one

2-羟基-2-(2-羟基-3,4-二甲氧基苯基)茚-1,3-二酮

1-(2-hydroxy-3,4-dimethoxyphenyl)-3-phenylprop-2-en-1-one

2,3-dimethoxy-6-nitrophenol

4.6-dinitro-3-hydroxy-1.2-dimethoxy-benzene