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