4-Chloro-6-hydroxy-3-(trifluoromethoxy)pyridine-2-carboxylic acid
2-Cyano-6-methyl-4-(trifluoromethoxy)pyridine-3-acetonitrile
4-Chloro-2-hydroxy-3-(trifluoromethoxy)pyridine-5-carboxylic acid
2-Cyano-5-methyl-6-(trifluoromethoxy)pyridine-3-acetonitrile