3-Cyano-4-(difluoromethyl)-5-iodopyridine-2-sulfonyl chloride
Ethyl 3-(bromomethyl)-2-chloro-6-(difluoromethyl)pyridine-4-carboxylate
6-Cyano-4-(difluoromethyl)-2-hydroxypyridine-3-methanol
Ethyl 4-cyano-2-(difluoromethyl)-5-hydroxypyridine-3-acetate