4-nitro-N-[(4-nitrophenyl)diazenyl]aniline

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

ethyl 2-(4-nitroanilino)-2-oxoacetate

(4-nitro-phenyl)-oxalamide

4’-氨基-4-硝基二苯胺-2-磺酸