6-甲氧基-2H-色烯-3-甲腈

ethyl (2-formyl-4-methoxy-phenoxy)-acetate

ethyl(2-ethoxycarbonylmethoxy-5-methoxyphenyl)acetate

4-甲氧基苯酚

2-(2-(carboxymethoxy)-5-methoxyphenyl)acetic acid