Methyl 4-(aminomethyl)-3-bromo-2-(difluoromethyl)pyridine-5-carboxylate
5-(Bromomethyl)-3-chloro-2-cyano-4-(difluoromethyl)pyridine
5-(Bromomethyl)-3-chloro-4-cyano-2-(difluoromethyl)pyridine
3-(Bromomethyl)-5-chloro-2-cyano-6-(difluoromethyl)pyridine