Methyl 3-(chloromethyl)-5-(difluoromethyl)-2-iodopyridine-6-acetate
Methyl 3-(chloromethyl)-4-(difluoromethyl)-6-iodopyridine-2-acetate
Methyl 3-(chloromethyl)-2-(difluoromethyl)-6-iodopyridine-4-acetate
Ethyl 4-(difluoromethyl)-6-methoxy-3-methylpyridine-2-acetate