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