Ethyl 3-bromo-4-(difluoromethyl)-2-hydroxypyridine-5-carboxylate
5-Bromo-4-(chloromethyl)-2-cyano-3-(difluoromethyl)pyridine
Ethyl 3-bromo-2-(difluoromethyl)-6-hydroxypyridine-4-carboxylate
Ethyl 3-bromo-2-(difluoromethyl)-5-hydroxypyridine-4-carboxylate