1,2,3,4-四甲氧基苯

2.3.4-三甲氧基苯乙酸

2,3-二羟基-4-甲氧基苯乙酮

2-(3,4-dimethoxy-2-phenylmethoxyphenyl)acetic acid

1-(2,3,4,5-tetramethoxyphenyl)ethanone