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