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