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