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