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