2-methyl-2-(3-oxobutyl)cyclopentane-1,3-dione

3-(7a-methyl-1,5-dioxo-2,3,6,7-tetrahydroinden-4-yl)propanoic acid

丁二酸二甲酯

(3aR,7aR)-3a-hydroxy-7a-methylperhydroindene-1,5-dione

(+)-六氢-3a-羟基-7a-甲基-1H-茚-1,5(6H)-二酮