ethyl 2-[(2-nitrophenyl)diazenyl]-3-oxobutanoate

4-nitro-N-(2-nitrophenyl)benzamide

5-hydroxy-11-oxidoindolo[2,3-b]quinoxalin-11-ium

N-(2-pyrrol-1-ylphenyl)acetamide

2-naphthalen-2-yl-1H-benzimidazole