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