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