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