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