Methyl 2-bromo-4-(difluoromethyl)-3-methoxypyridine-5-carboxylate
2-Bromo-6-(difluoromethyl)-3-iodopyridine-5-sulfonyl chloride
Methyl 2-bromo-3-(difluoromethyl)-6-methoxypyridine-4-carboxylate
3-Bromo-4-(difluoromethyl)-5-methoxypyridine-2-acetic acid