2-Cyano-4-nitro-3-(trifluoromethoxy)pyridine-6-acetic acid
3-Chloro-4-nitro-6-(trifluoromethoxy)pyridine-2-acetic acid
3-Chloro-2-nitro-6-(trifluoromethoxy)pyridine-4-acetic acid
Ethyl 2-cyano-4-(trifluoromethoxy)-5-(trifluoromethyl)pyridine-3-acetate