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