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