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