3-Chloro-2-fluoro-6-(fluoromethyl)-4-(trifluoromethoxy)pyridine
3-Chloro-6-(chloromethyl)-2-fluoro-5-(trifluoromethoxy)pyridine
3-Chloro-6-(difluoromethyl)-2-fluoro-5-(trifluoromethoxy)pyridine
4-Chloro-2-(difluoromethyl)-6-fluoro-3-(trifluoromethoxy)pyridine