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