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