Methyl 3-amino-2-(aminomethyl)-5-(difluoromethyl)pyridine-4-acetate
5-Amino-3-(bromomethyl)-4-(difluoromethyl)-2-(trifluoromethyl)pyridine
Ethyl 4-amino-5-(aminomethyl)-2-(difluoromethyl)pyridine-3-acetate
Methyl 6-amino-2-(aminomethyl)-3-(difluoromethyl)pyridine-4-acetate