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