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