3-(Chloromethyl)-6-cyano-4-(trifluoromethoxy)pyridine-2-carboxaldehyde
5-(Chloromethyl)-2-cyano-3-(trifluoromethoxy)pyridine-4-carboxaldehyde
4-(Chloromethyl)-5-cyano-3-(trifluoromethoxy)pyridine-2-carboxaldehyde
4-Chloro-3-(difluoromethyl)-2-(trifluoromethoxy)pyridine-6-carboxylic acid