3-Bromo-5-(difluoromethyl)-6-fluoropyridine-2-sulfonyl chloride
5-Bromo-4-(difluoromethyl)-2-iodopyridine-3-carboxylic acid
3-Bromo-5-(difluoromethyl)-4-fluoropyridine-2-sulfonyl chloride
3-Bromo-5-(difluoromethyl)-2-fluoropyridine-4-sulfonyl chloride