5-Cyano-4-fluoro-3-hydroxy-2-(trifluoromethoxy)pyridine
2-Chloro-3-(difluoromethyl)-5-methoxy-4-(trifluoromethoxy)pyridine
3-Chloro-6-(fluoromethyl)-2-methoxy-4-(trifluoromethoxy)pyridine
5-Chloro-2-(fluoromethyl)-4-methoxy-3-(trifluoromethoxy)pyridine