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