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