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