6-nitro-2-phenylindazole

5-[(2,4-dinitrophenyl)methylidene]-2,2-dimethyl-1,3-dioxane-4,6-dione

N-(4-methoxyphenyl)-1-(4-nitrophenyl)methanimine

N-(2,4-dinitrobenzylidene)-4-methoxyaniline

N-(4-nitrobenzylidene)-2,4-dimethoxyaniline