Ethyl 4-bromo-2-(difluoromethyl)-6-hydroxypyridine-3-carboxylate
Ethyl 4-bromo-2-(difluoromethyl)-5-hydroxypyridine-3-carboxylate
3-Bromo-6-(difluoromethyl)-2-fluoropyridine-4-sulfonamide
Ethyl 4-bromo-2-(difluoromethyl)-3-hydroxypyridine-5-carboxylate