4-Bromo-6-(bromomethyl)-3-chloro-2-(trifluoromethoxy)pyridine
3-Bromo-2-(bromomethyl)-6-fluoro-5-(trifluoromethoxy)pyridine
5-Bromo-3-(bromomethyl)-2-chloro-4-(trifluoromethoxy)pyridine
2-(Bromomethyl)-5-chloro-3-(trifluoromethoxy)pyridine-4-acetonitrile