3-(Fluoromethyl)-6-hydroxy-2-(trifluoromethoxy)pyridine-4-carboxaldehyde
4-(Chloromethyl)-5-(difluoromethyl)-2-hydroxy-3-(trifluoromethoxy)pyridine
4-(Fluoromethyl)-2-hydroxy-5-(trifluoromethoxy)pyridine-3-carboxaldehyde
2-(Chloromethyl)-5-hydroxy-4-(trifluoromethoxy)pyridine-3-methanol