N-(2,2-dicyanoethenyl)-4-nitrobenzenesulfonamide

4-(pyridin-2-ylamino)benzenesulfonamide

4-nitro-benzenesulfonic acid trans-cinnamylidenehydrazide

4-nitro-N-(4-nitrophenyl)sulfonylbenzenesulfonamide

N-benzyl-4-nitrobenzenesulfonamide