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