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