Synonyms: Benzeneacetic acid, α-methyl-, Hydratropic acid (6CI,7CI,8CI), α-Methylbenzeneacetic acid, (RS)-2-Phenylpropanoic acid, (RS)-2-Phenylpropionic acid, (±)-2-Phenylpropanoic acid, (±)-2-Phenylpropionic acid, (±)-Hydratropic acid, (±)-α-Methylphenylacetic acid, 2-Phenylpropanoic acid, 2-Phenylpropionic acid, DL-2-Phenylpropionic acid, NSC 245033, NSC 42872, dl-PPA, α-Methylphenylacetic acid, α-Phenylpropanoic acid, α-Phenylpropionic acid