Synonyms: (2RS)-2-Phenylbutanoic Acid, Benzeneacetic acid, α-ethyl-, Butyric acid, 2-phenyl- (8CI), α-Ethylbenzeneacetic acid, (RS)-2-Phenylbutanoic acid, (±)-2-Phenylbutanoic acid, (±)-2-Phenylbutyric acid, (±)-α-Ethylphenylacetic acid, (±)-α-Phenylbutyric acid, 2-Phenylbutanoic acid, 2-Phenylbutyric acid, NSC 1860, α-Ethyl-α-toluic acid, α-Ethylphenylacetic acid, α-Phenylbutyric acid