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