6-Cyano-3-hydroxy-4-(trifluoromethoxy)pyridine-2-carboxylic acid
3-Chloro-4-(chloromethyl)-5-hydroxy-2-(trifluoromethoxy)pyridine
3-Chloro-4-methyl-5-(trifluoromethoxy)pyridine-2-carboxylic acid
Ethyl 6-cyano-3-hydroxy-2-(trifluoromethoxy)pyridine-4-acetate