1,4-dimethoxy-9,10-bis(2-phenylethynyl)anthracene

6-chloro-1,11-dihydroxy-1,2,3,4-tetrahydrotetracene-5,12-dione

(12-chloro-10-hydroxy-6,11-dioxotetracen-5-yl) acetate

2-(2,4-dioxopentan-3-yl)-1,4-dihydroxyanthracene-9,10-dione

3-acetyl-5-hydroxy-2-methylanthra[1,2-b]furan-6,11-dione