P-Methoxy Phenyl Acetic Acid also known as 4-Methoxyphenylacetic acid is a pale yellow colored liquid compound which is widely used in applications organic synthesis and as an intermediate for pharmaceuticals products. The chemical formula of this pharma grade chemical is C9H10O3 with a molecular weight of 166.17 grams per mol. P-Methoxy Phenyl Acetic Acid melts at 87 degree Celsius at a pressure of 76 mm of Hg. It is insoluble in water but shows solubility in alcohol with a dissolving rate of 9753 milligrams per liter at 25 degrees Celsius.