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