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