6-(Difluoromethyl)-2-hydroxy-4-(trifluoromethyl)pyridine-3-acetonitrile
2-(Bromomethyl)-6-(difluoromethyl)-3-hydroxypyridine-5-acetonitrile
6-(Bromomethyl)-3-(difluoromethyl)-2-hydroxypyridine-4-acetonitrile
3-(Difluoromethyl)-6-hydroxy-4-(trifluoromethyl)pyridine-2-methanol