3-(Aminomethyl)-4-(difluoromethyl)-2-hydroxypyridine-6-acetonitrile
3-(Chloromethyl)-4-(difluoromethyl)-5-hydroxypyridine-2-methanol
5-(Aminomethyl)-2-(difluoromethyl)-3-hydroxypyridine-4-methanol
4-(Aminomethyl)-3-(difluoromethyl)-2-hydroxypyridine-5-methanol