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