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