伊康[酸]酐;亚甲基琥珀酸酐;2-亚甲基丁二酸酐;3,4-二氢-3-亚甲基-2,5-呋喃二酮;

2-Methylenesuccinic anhydride;3,4-dihydro-3-methylidenefuran-2,5-dione;3,4-Dihydro-3-methylene-2,5-furandione;