Ethyl 3-chloro-5-(difluoromethyl)-4-fluoropyridine-2-carboxylate
Methyl 4-(aminomethyl)-6-bromo-3-(difluoromethyl)pyridine-2-carboxylate
Ethyl 3-chloro-4-(difluoromethyl)-6-fluoropyridine-2-carboxylate
Methyl 4-(aminomethyl)-2-bromo-3-(difluoromethyl)pyridine-6-carboxylate