2-Hydroxy-3-nitro-4-(trifluoromethoxy)-5-(trifluoromethyl)pyridine
4-(Chloromethyl)-3-hydroxy-5-methoxy-2-(trifluoromethoxy)pyridine
4-(Chloromethyl)-6-hydroxy-2-methoxy-3-(trifluoromethoxy)pyridine
3-(Difluoromethyl)-6-hydroxy-4-nitro-2-(trifluoromethoxy)pyridine