4-(1,4-dioxonaphthalen-2-yl)sulfanylbutanoic acid

3-(1,4-dioxonaphthalen-2-yl)sulfanylpropanamide

2-butanoylnaphthalene-1,4-dione

2-(4-iodophenylamino)naphthalene-1,4-diol

4-hydroxy-3-(4-phenylphenyl)naphthalene-1,2-dione