1-nitro-2-(4-nitrophenyl)-1-ethoxycarbonylethene

1-[(E)-2-bromo-2-nitroethenyl]-4-nitrobenzene

4-nitro-benzaldehyde-[N-(4-dimethylamino-phenyl)-oxime ]

1-(4-nitrophenyl)-N-[2-[(4-nitrophenyl)methylideneamino]phenyl]methanimine

N,N-diethyl-N'-(4-nitro-benzylidene)-p-phenylenediamine