Methyl 3-(chloromethyl)-5-cyano-4-(difluoromethyl)pyridine-2-carboxylate
2-(Chloromethyl)-6-cyano-4-(difluoromethyl)pyridine-3-acetic acid
2-(Chloromethyl)-6-(difluoromethyl)-3-fluoro-4-hydroxypyridine
3-(Bromomethyl)-5-(difluoromethyl)-2-fluoro-4-hydroxypyridine