4-(Bromomethyl)-3-(difluoromethyl)-5-methylpyridine-2-carboxaldehyde
4-(Bromomethyl)-3-(difluoromethyl)-2-methylpyridine-6-carboxaldehyde
4-(Bromomethyl)-3-(difluoromethyl)-2-methylpyridine-5-carboxaldehyde
4-(Bromomethyl)-6-(difluoromethyl)-2-methylpyridine-3-carboxaldehyde