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