2-Cyano-6-nitro-4-(trifluoromethoxy)pyridine-3-carboxylic acid
6-(Aminomethyl)-3-chloro-4-(trifluoromethoxy)pyridine-2-carboxylic acid
2-Cyano-5-fluoro-3-methyl-6-(trifluoromethoxy)pyridine
2-Cyano-5-nitro-6-(trifluoromethoxy)pyridine-3-carboxylic acid