4-Cyano-3-(difluoromethyl)-2-fluoro-6-(trifluoromethoxy)pyridine
3-(Bromomethyl)-5-cyano-2-fluoro-4-(trifluoromethoxy)pyridine
4-Cyano-2-(difluoromethyl)-6-fluoro-3-(trifluoromethoxy)pyridine
5-(Bromomethyl)-4-cyano-3-fluoro-2-(trifluoromethoxy)pyridine