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