1,4,8-Trichloroanthraquinone

2-chloro-8-hydroxynaphthalene-1,4-dione

ethyl 4-(2,5-dimethoxyphenyl)-4-hydroxy-2-butynoate

1,4-dihydroxy-5-methoxy-9,10-anthracenedione

4,5-dihydroxy-1-methoxyanthracene-9,10-dione