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