2-benzoyl-4,5-dichloro-benzoic acid

2,3,4-trichloro-9,10-dioxo-9,10-dihydroanthracene-1-carboxylic acid methyl ester

1,2,3,4-tetrachloro-11,11-dimethoxy-1,4,4a,9a-tetrahydro-1,4-methanoanthracene-9,10-dione

2,3-dichloroanthracene

2,3,9,10-tetrachloro-anthracene