Synonyms: (2RS)-2-Methylpentanoic acid, Pentanoic acid, 2-methyl-, Valeric acid, 2-methyl- (6CI,7CI,8CI), Valeric acid, α-methyl- (3CI), 2-Methylpentanoic acid, (±)-2-Methylpentanoic acid, 2-Methyl-n-valeric acid, 2-Methylvaleric acid, 2-Pentanecarboxylic acid, DL-2-Methylpentanoic acid, Methylpropylacetic acid, NSC 8406, α-Methylvaleric acid