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