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