5-Cyano-4-(difluoromethyl)-2-(trifluoromethoxy)pyridine-3-carboxaldehyde
4-(Bromomethyl)-2-cyano-3-nitro-5-(trifluoromethoxy)pyridine
3-Cyano-4-(difluoromethyl)-5-(trifluoromethoxy)pyridine-2-carboxaldehyde
5-(Bromomethyl)-3-cyano-4-nitro-2-(trifluoromethoxy)pyridine