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