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