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