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