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