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