1,8-dimethoxy-3-(4-tert-butoxymethylphenyl)anthraquinone
1,8-dihydroxy-3-(4'-dimethylamino-3'-methylphenyl)-anthraquinone
1,8-dihydroxy-3-(4-tert-butoxymethylphenyl)anthraquinone
1,8-dihydroxy-3-(4'-methoxyphenyl)-anthraquinone
1,8-dihydroxy-3-(4'-hydroxyphenyl)-anthraquinone