4-(Difluoromethyl)-3-fluoro-2-iodopyridine-5-sulfonyl chloride
4-(Difluoromethyl)-2-fluoro-6-iodopyridine-3-sulfonyl chloride
4-(Difluoromethyl)-2-fluoro-5-iodopyridine-3-sulfonyl chloride
4-(Difluoromethyl)-2-fluoro-3-iodopyridine-5-sulfonyl chloride