1,3-bis(4-methoxyphenyl)cyclopenta[a]indene-2,4-dione

2-(2,4-dimethoxyphenyl)-2-hydroxyindene-1,3-dione

2-hydroxy-2-(1H-indol-3-yl)indene-1,3-dione

(2-acetyloxy-1,3-dioxoinden-2-yl) acetate

9-氧代-9H-茚并[1,2-B]吡嗪-2,3-二甲腈