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