N,N-diethyl-2-nitrobenzenesulfonamide

N-diazo-2-nitrobenzenesulfonamide

2-[(2-nitrophenyl)sulfonylamino]acetamide

N-(2-bromo-5-nitrophenyl)-2-nitrobenzenesulfonamide

N-(2-bromo-4-nitrophenyl)-2-nitrobenzenesulfonamide