2-(Fluoromethyl)-3-hydroxy-5-methoxy-6-(trifluoromethoxy)pyridine
2-(Bromomethyl)-5-hydroxy-4-methoxy-3-(trifluoromethoxy)pyridine
6-(Bromomethyl)-4-hydroxy-2-methoxy-3-(trifluoromethoxy)pyridine
3-(Chloromethyl)-6-hydroxy-4-methoxy-2-(trifluoromethoxy)pyridine