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