3-Chloro-5-(difluoromethyl)-2-fluoropyridine-6-sulfonyl chloride
5-Chloro-4-(difluoromethyl)-2-fluoropyridine-3-sulfonyl chloride
2-Chloro-6-(difluoromethyl)-5-hydroxypyridine-3-methanol
5-Chloro-4-(difluoromethyl)-3-fluoropyridine-2-sulfonyl chloride