4-[p-(Dimethylamino)anilino]-1,2-naphthoquinone

4-(4-chloroanilino)naphthalene-1,2-dione

4-(4-acetyl-anilino)-[1,2]naphthoquinone

4-(p-Cyanoanilino)-1,2-naphthoquinone

4-((3-methoxy-4-oxonaphthalen-1(4H)-ylidene)amino)benzonitrile