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