4-Cyano-5-fluoro-2-(trifluoromethoxy)pyridine-3-carboxylic acid
2-(Difluoromethyl)-3-fluoro-6-nitro-5-(trifluoromethoxy)pyridine
4-Cyano-3-fluoro-5-(trifluoromethoxy)pyridine-2-carboxylic acid
3-Fluoro-6-(fluoromethyl)-2-nitro-4-(trifluoromethoxy)pyridine