3,3-二甲基丙烯酸

3-methylpent-2-enedioic acid

7,8-dihydro-4,7,7-trimethyl-2H,5H-pyrano[4,3-b]pyran-2,5-dione

3,3-二甲基丙烯酸甲酯

3,7-Dimethyl-5-oxo-octadien-(2,6)-saeure-(1)-methylester