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