4-(Difluoromethyl)-2-hydroxy-5-methoxypyridine-3-carboxaldehyde
3-(Difluoromethyl)-4-hydroxy-5-methoxypyridine-2-carboxaldehyde
3-(Aminomethyl)-6-(difluoromethyl)-2-hydroxy-4-methoxypyridine
4-(Difluoromethyl)-3-hydroxy-5-iodopyridine-2-carbonyl chloride