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

4-amino-N-(2,2-dicyanoethenyl)benzenesulfonamide

4-chloro-N-(2,2-dicyanoethenyl)benzenesulfonamide

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

2-[(3-chloroanilino)methylidene]propanedinitrile