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