Methyl 4-(bromomethyl)-3-(difluoromethyl)-5-hydroxypyridine-2-carboxylate
3-(Chloromethyl)-5-(difluoromethyl)-2-hydroxypyridine-6-methanol
6-(Chloromethyl)-3-(difluoromethyl)-2-hydroxypyridine-4-methanol
3-(Difluoromethyl)-2-hydroxy-5-nitropyridine-4-carboxaldehyde