3-Fluoro-2-(fluoromethyl)-5-nitro-6-(trifluoromethoxy)pyridine
6-Cyano-4-iodo-2-methyl-3-(trifluoromethoxy)pyridine
3-Fluoro-2-(fluoromethyl)-4-nitro-5-(trifluoromethoxy)pyridine
4-(Chloromethyl)-3-fluoro-6-(trifluoromethoxy)pyridine-2-carboxylic acid