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