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