4-(Difluoromethyl)-2-hydroxy-3-nitro-5-(trifluoromethoxy)pyridine
3-(Chloromethyl)-2-fluoro-5-(trifluoromethoxy)pyridine-6-methanol
5-(Difluoromethyl)-3-hydroxy-4-nitro-2-(trifluoromethoxy)pyridine
3-(Chloromethyl)-2-fluoro-4-(trifluoromethoxy)pyridine-5-methanol