Methyl 4-(bromomethyl)-2-cyano-3-(difluoromethyl)pyridine-5-carboxylate
3-(Difluoromethyl)-2-fluoro-5-(trifluoromethyl)pyridine-6-acetic acid
4-Chloro-2-cyano-6-methoxy-3-(trifluoromethoxy)pyridine
2-(Chloromethyl)-3-(difluoromethyl)pyridine-4-acetic acid