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