Ethyl 3-(chloromethyl)-4-cyano-2-(trifluoromethoxy)pyridine-6-acetate
3-(Bromomethyl)-2-fluoro-4-(trifluoromethoxy)pyridine-6-carboxylic acid
3-(Chloromethyl)-2-cyano-6-methyl-5-(trifluoromethoxy)pyridine
2-(Bromomethyl)-6-fluoro-3-(trifluoromethoxy)pyridine-5-carboxylic acid