4-Chloro-3-nitro-2-(trifluoromethoxy)pyridine-5-carboxylic acid
3-Chloro-4-fluoro-2-(fluoromethyl)-5-(trifluoromethoxy)pyridine
4-Bromo-2-(chloromethyl)-6-(difluoromethyl)-3-(trifluoromethoxy)pyridine
3-Chloro-2-fluoro-5-(fluoromethyl)-6-(trifluoromethoxy)pyridine