4-Bromo-5-chloro-3-(trifluoromethoxy)pyridine-2-carboxaldehyde
2-Bromo-3-fluoro-4-(fluoromethyl)-5-(trifluoromethoxy)pyridine
3-Bromo-5-(chloromethyl)-2-fluoro-4-(trifluoromethoxy)pyridine
3-Bromo-2-(chloromethyl)-5-fluoro-6-(trifluoromethoxy)pyridine