2-Bromo-3-(difluoromethyl)-4-hydroxypyridine-5-sulfonyl chloride
6-Bromo-4-cyano-3-(difluoromethyl)pyridine-2-carboxaldehyde
3-Bromo-6-(difluoromethyl)-2-hydroxypyridine-5-carbonyl chloride
5-Bromo-2-(difluoromethyl)-4-hydroxypyridine-3-carbonyl chloride