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