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