4-Chloro-2-nitro-3-(trifluoromethoxy)pyridine-6-carboxylic acid
6-Cyano-2-fluoro-4-(trifluoromethoxy)pyridine-3-acetic acid
3-Chloro-5-nitro-6-(trifluoromethoxy)pyridine-2-carboxylic acid
2-Chloro-3-(chloromethyl)-4-nitro-6-(trifluoromethoxy)pyridine