2-Bromo-5-(difluoromethyl)-3-methoxypyridine-6-sulfonyl chloride
2-Bromo-3-(difluoromethyl)-5-methylpyridine-4-acetic acid
6-Bromo-4-(difluoromethyl)-2-methoxypyridine-3-sulfonyl chloride
6-Bromo-4-(difluoromethyl)-3-methoxypyridine-2-sulfonyl chloride