5-Cyano-4-nitro-3-(trifluoromethoxy)pyridine-2-carboxylic acid
3-Cyano-4-nitro-2-(trifluoromethoxy)pyridine-5-carboxylic acid
Methyl 2-(chloromethyl)-5-fluoro-3-(trifluoromethoxy)pyridine-6-acetate
Ethyl 4-cyano-5-(difluoromethyl)-2-(trifluoromethoxy)pyridine-3-carboxylate