2-(1,2-dimethyl-1H-pyridin-4-ylidene)-indan-1,3-dione

2-(1-methylpyridin-2-ylidene)indene-1,3-dione

dimethyl 1,4-dihydroxynaphthalene-2,3-dicarboxylate

二苯酞內酯

2-(3-甲基-1-氧代-2-丁烯-1-基)-1H-茚-1,3(2H)-二酮