meso-2,3-di-p-nitrophenylbutane

1,1-bis-(4-nitro-phenyl)-propane

1-benzoylamino-3,5-dibromo-2-(4-nitro-benzoyloxy)-benzene

1,5-dibromo-3-(4-chloro-benzoylamino)-2-(4-nitro-benzoyloxy)-benzene

3-chloro-5-(2-nitro-benzoylamino)-4-(4-nitro-benzoyloxy)-toluene