Ethyl 6-(bromomethyl)-3-(difluoromethyl)-4-(trifluoromethoxy)pyridine-2-acetate
4-(Bromomethyl)-5-(difluoromethyl)-3-(trifluoromethoxy)pyridine-2-sulfonyl chloride
2-(Difluoromethyl)-5-iodopyridine-4-acetonitrile
2-(Difluoromethyl)-4-iodopyridine-5-acetonitrile