2-(Bromomethyl)-3-hydroxy-4-iodo-5-(trifluoromethoxy)pyridine
4-(Bromomethyl)-3-fluoro-5-methoxy-2-(trifluoromethoxy)pyridine
6-Fluoro-3-(fluoromethyl)-4-methoxy-2-(trifluoromethoxy)pyridine
3-(Fluoromethyl)-5-hydroxy-2-methyl-4-(trifluoromethoxy)pyridine