2-(Chloromethyl)-6-cyano-4-(difluoromethyl)-3-(trifluoromethoxy)pyridine
4-Cyano-2-(fluoromethyl)-3-(trifluoromethoxy)pyridine-6-carboxylic acid
2-(Chloromethyl)-5-cyano-4-(difluoromethyl)-3-(trifluoromethoxy)pyridine
3-Cyano-5-(fluoromethyl)-6-(trifluoromethoxy)pyridine-2-carboxylic acid