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