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