Methyl 2-bromo-6-(difluoromethyl)-3-hydroxypyridine-5-acetate
2-Bromo-5-(difluoromethyl)-3-methylpyridine-4-sulfonyl chloride
Methyl 2-bromo-5-(difluoromethyl)-6-hydroxypyridine-3-acetate
2-Bromo-4-(difluoromethyl)-6-methylpyridine-3-sulfonyl chloride