3-(Difluoromethyl)-2-hydroxy-6-methyl-5-nitropyridine
3-(Difluoromethyl)-2-hydroxy-5-methoxypyridine-6-carbonyl chloride
6-(Bromomethyl)-2-(difluoromethyl)-4-hydroxy-3-methoxypyridine
2-(Difluoromethyl)-3-hydroxy-4-methoxypyridine-5-carbonyl chloride