Ethyl 4-(bromomethyl)-6-chloro-2-(difluoromethyl)pyridine-3-acetate
3-Cyano-4-(difluoromethyl)-5-hydroxypyridine-2-sulfonyl chloride
3-Cyano-6-(difluoromethyl)-2-hydroxypyridine-4-carbonyl chloride
4-Cyano-5-(difluoromethyl)-2-hydroxypyridine-3-carbonyl chloride