2-(Chloromethyl)-5-fluoro-4-(trifluoromethoxy)pyridine-3-carboxylic acid
5-(Bromomethyl)-2-hydroxy-4-methoxy-3-(trifluoromethoxy)pyridine
5-(Fluoromethyl)-4-hydroxy-3-methoxy-2-(trifluoromethoxy)pyridine
3-(Fluoromethyl)-4-hydroxy-2-methoxy-5-(trifluoromethoxy)pyridine