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