4-(Fluoromethyl)-5-hydroxy-2-(trifluoromethoxy)pyridine-3-carboxaldehyde
4-(Difluoromethyl)-6-iodo-2-methyl-3-(trifluoromethoxy)pyridine
4-(Fluoromethyl)-3-hydroxy-5-(trifluoromethoxy)pyridine-2-carboxaldehyde
4-(Difluoromethyl)-2-iodo-5-methyl-3-(trifluoromethoxy)pyridine