Methyl 2-(chloromethyl)-4-(difluoromethyl)-3-fluoropyridine-6-carboxylate
Ethyl 5-(chloromethyl)-3-(difluoromethyl)-4-fluoropyridine-2-carboxylate
Methyl 6-(chloromethyl)-2-(difluoromethyl)-4-fluoropyridine-3-acetate
2-(Difluoromethyl)-5-hydroxy-6-iodopyridine-3-acetonitrile