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