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