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