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