4-甲氧-5-甲鄰二醛苯甲酸

7-methoxy-6-methyl-1-oxo-3H-2-benzofuran-4-carboxylic acid

7-methoxy-6-methyl-1-oxo-1,3-dihydro-isobenzofuran-4-carbaldehyde

3-methoxy-6-methyl-benzene-1,2,4-tricarboxylic acid

6-methyl-4H,9H-[1,3]dioxino[4,5-e]isobenzofuran-7-one