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