4-(2-methoxybenzoyl)-5-methoxybenzene-1,3-dicarboxylic acid

5-hydroxy-4-(2-hydroxybenzoyl)benzene-1,3-dicarboxylic acid

Ethyl 9,10-dihydro-4,5-dihydroxy-9,10-dioxo-2-anthracenecarboxylate

(2,4-dibromo-6-hydroxyphenyl)-(2-hydroxyphenyl)methanone

(2-benzyloxy-4,6-dibromophenyl)-(2-benzyloxyphenyl)methanone