4-Cyano-3-(fluoromethyl)-5-(trifluoromethoxy)pyridine-2-carboxylic acid
2-Fluoro-4-methoxy-5-(trifluoromethoxy)-3-(trifluoromethyl)pyridine
4-Cyano-5-(difluoromethyl)-3-(trifluoromethoxy)-2-(trifluoromethyl)pyridine
4-Cyano-6-(fluoromethyl)-2-(trifluoromethoxy)pyridine-3-carboxylic acid