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