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