4-Bromo-2-cyano-6-(difluoromethyl)-3-iodopyridine
4-Chloro-2-(fluoromethyl)-6-(trifluoromethoxy)pyridine-3-acetonitrile
2-Amino-5-chloro-4-(trifluoromethoxy)pyridine-3-acetonitrile
2-Amino-3-(trifluoromethoxy)-5-(trifluoromethyl)pyridine-4-carboxylic acid