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