6-(Chloromethyl)-4-fluoro-2-(trifluoromethoxy)pyridine-3-carboxaldehyde
3-Cyano-5-(difluoromethyl)-4-iodo-2-(trifluoromethoxy)pyridine
5-Cyano-4-(difluoromethyl)-2-iodo-3-(trifluoromethoxy)pyridine
2-(Chloromethyl)-3-fluoro-6-(trifluoromethoxy)pyridine-5-carboxaldehyde