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