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