4-Bromo-2-(bromomethyl)-5-(trifluoromethoxy)pyridine-3-acetonitrile
6-Bromo-4-(bromomethyl)-2-(trifluoromethoxy)pyridine-3-acetonitrile
4-Bromo-3-(bromomethyl)-2-(difluoromethyl)-5-(trifluoromethoxy)pyridine
4-Bromo-6-(bromomethyl)-3-(difluoromethyl)-2-(trifluoromethoxy)pyridine