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