4-(Chloromethyl)-2-(difluoromethyl)-6-hydroxy-3-nitropyridine
2-(Difluoromethyl)-5-hydroxy-3-methoxypyridine-6-acetonitrile
3-(Chloromethyl)-2-(difluoromethyl)-4-hydroxy-6-nitropyridine
4-(Difluoromethyl)-3-hydroxy-6-methoxy-2-(trifluoromethyl)pyridine