Similar names: 2-Methylbutyric Acid; Butanoic acid, 2-methyl- (9CI, ACI); 2-Methylbutanoic acid (ACI); Butyric acid, 2-methyl- (6CI, 8CI); Butyric acid, α-methyl- (3CI); (±)-2-Methylbutanoic acid; (±)-2-Methylbutyric acid; (±)-Methylethylacetic acid; (±)-α-Methylbutyric acid; 2-Ethylpropanoic acid; 2-Methyl-n-butyric acid; 2-Methylbutyric acid; DL-2-Methylbutanoic acid; DL-2-Methylbutyric acid; DL-α-Methylbutyric acid; Active valeric acid; Ethylmethylacetic acid; Hydroangelic acid; Methylethylacetic acid; NSC 7304; α-Methyl-n-butyric acid; α-Methylbutyric acid