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