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