4-methoxy-3-(o-nitrobenzyloxy)phenylacetic acid

3-溴-4-甲氧基苯乙酸

2-bromo-4-methoxy-5-hydroxylphenylacetic acid

(3-bromo-4-methoxy-phenyl)-acetic acid methyl ester

2-Chloro-5-hydroxy-4-methoxyphenylacetic acid