Ethyl 4-(bromomethyl)-2-(difluoromethyl)-3-(trifluoromethyl)pyridine-6-carboxylate
Ethyl 2-(bromomethyl)-6-(difluoromethyl)-5-(trifluoromethyl)pyridine-3-carboxylate
Ethyl 5-(bromomethyl)-3-(difluoromethyl)-4-(trifluoromethyl)pyridine-2-carboxylate
Ethyl 3-(bromomethyl)-5-(difluoromethyl)-2-(trifluoromethyl)pyridine-6-carboxylate