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