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