Ethyl 2-(chloromethyl)-3-cyano-5-(trifluoromethoxy)pyridine-4-carboxylate
Methyl 2-amino-4-chloro-6-(difluoromethyl)pyridine-3-acetate
Methyl 3-(difluoromethyl)-5-fluoro-6-methylpyridine-2-carboxylate
4-(Chloromethyl)-2-(difluoromethyl)-3-iodopyridine-6-acetonitrile