5-Bromo-3-(difluoromethyl)-4-hydroxypyridine-2-carbonyl chloride
3-Bromo-6-(bromomethyl)-2-(difluoromethyl)-5-iodopyridine
3-Bromo-5-(difluoromethyl)-2-hydroxypyridine-6-carbonyl chloride
5-Bromo-4-(difluoromethyl)-2-hydroxypyridine-3-carbonyl chloride