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