6-Chloro-2-(chloromethyl)-3-hydroxy-4-(trifluoromethoxy)pyridine
2-Chloro-4-(chloromethyl)-5-hydroxy-3-(trifluoromethoxy)pyridine
2-Chloro-3-(chloromethyl)-5-hydroxy-4-(trifluoromethoxy)pyridine
2-Chloro-3-(difluoromethyl)-5-hydroxy-4-(trifluoromethoxy)pyridine