8,9-dihydroxy-10-chloro-1,4-anthraquinone

4,6-dimethoxy-9-(2,2-dimethyl trimethylene ketal)-11-hydroxy-7,8,9,10-tetrahydronaphthacene-5,12-dione

8-methoxy-9-hydroxy-10-chloro-1,4-anthraquinone