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