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