3-(Bromomethyl)-6-(difluoromethyl)-4-hydroxypyridine-2-carboxaldehyde
3-(Difluoromethyl)-2-hydroxy-4-nitropyridine-6-carbonyl chloride
4-(Difluoromethyl)-5-hydroxy-3-nitropyridine-2-acetonitrile
4-(Chloromethyl)-5-(difluoromethyl)-3-hydroxy-2-(trifluoromethyl)pyridine