5-Bromo-2-(chloromethyl)-3-(difluoromethyl)-6-hydroxypyridine
2-Bromo-3-(difluoromethyl)-4-hydroxy-5-(trifluoromethyl)pyridine
2-Bromo-5-(chloromethyl)-3-(difluoromethyl)-6-hydroxypyridine
4-Bromo-6-(chloromethyl)-3-(difluoromethyl)-2-hydroxypyridine