Ethyl 4-(difluoromethyl)-5-fluoro-3-(trifluoromethyl)pyridine-2-carboxylate
5-(Bromomethyl)-2-(difluoromethyl)-3-fluoropyridine-4-carboxaldehyde
4-(Bromomethyl)-3-(difluoromethyl)-2-fluoropyridine-5-carboxaldehyde
5-(Bromomethyl)-4-(difluoromethyl)-3-fluoropyridine-2-carboxaldehyde