6-(Bromomethyl)-3-fluoro-4-(trifluoromethoxy)pyridine-2-acetic acid
2-(Bromomethyl)-5-fluoro-3-(trifluoromethoxy)pyridine-4-acetic acid
6-(Chloromethyl)-2-fluoro-4-(trifluoromethoxy)pyridine-3-methanol
5-(Chloromethyl)-3-fluoro-4-(trifluoromethoxy)pyridine-2-carboxylic acid