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