Ethyl 3-amino-5-(aminomethyl)-2-(trifluoromethoxy)pyridine-6-carboxylate
Ethyl 3-amino-5-(aminomethyl)-2-(trifluoromethoxy)pyridine-4-carboxylate
Ethyl 5-amino-4-(aminomethyl)-2-(trifluoromethoxy)pyridine-3-carboxylate
Ethyl 3-amino-4-(aminomethyl)-6-(trifluoromethoxy)pyridine-2-carboxylate