Ethyl 2-amino-6-(difluoromethyl)-3-iodopyridine-5-carboxylate
Ethyl 2-(aminomethyl)-4-cyano-6-(difluoromethyl)pyridine-3-carboxylate
Ethyl 2-(aminomethyl)-4-cyano-3-(difluoromethyl)pyridine-6-carboxylate
Ethyl 2-(aminomethyl)-4-(difluoromethyl)-6-iodopyridine-3-carboxylate