2-(Bromomethyl)-4-(difluoromethyl)-3-hydroxy-6-methoxypyridine
5-(Chloromethyl)-2-(difluoromethyl)-3-hydroxy-4-methoxypyridine
3-(Chloromethyl)-4-(difluoromethyl)-2-hydroxy-5-methoxypyridine
6-(Chloromethyl)-2-(difluoromethyl)-4-hydroxy-3-methoxypyridine