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