N,2-bis(4-nitrophenyl)-N-phenylacetamide

(4-Nitro-phenyl)-acetic acid 3-trifluoromethyl-phenyl ester

tert-butyl p-nitrophenylperacetate

3-chlorophenyl 2-(4-nitrophenyl)acetate

4-(dimethylamino)phenyl 2-(4-nitrophenyl)acetate