英文同义词: | 2-methyl-1,1-dioxo-4,5-dihydro-1lambda6-thiophene-3-carboxylic acid;3-Thiophenecarboxylic acid, 4,5-dihydro-2-methyl-, 1,1-dioxide;2-Methyl-4,5-dihydrothiophene-3-carboxylic Acid 1,1-Dioxide;2-Methyl-1,1-dioxo-4,5-dihydro-1λ?-thiophene-3-carboxylic acid |