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