6-Bromo-4-(difluoromethyl)-2-hydroxypyridine-3-sulfonyl chloride
6-Bromo-4-(difluoromethyl)-3-hydroxypyridine-2-sulfonyl chloride
Ethyl 2-bromo-4-(difluoromethyl)-3-iodopyridine-5-carboxylate
2-Bromo-3-(difluoromethyl)-6-hydroxypyridine-5-sulfonyl chloride