4-methoxyphenylacetic acid is a monocarboxylic acid that is phenylacetic acid carrying a 4-methoxy substituent.it is pale yellow or off white colored flakes.
4-Methoxyphenylacetic acid is used in organic synthesis as well as pharmaceutical industry, especially used as an intermediate of puerarin. It can also be used as potential plasma biomarkers for early detection of non-small cell lung cancer. It is also used in drug industry as an intermediate to make Dextromethorphan.