Ethyl 5-amino-3-(chloromethyl)-4-(difluoromethyl)pyridine-2-carboxylate
2-Amino-3-(bromomethyl)-6-(difluoromethyl)pyridine-4-carboxaldehyde
Ethyl 5-amino-4-(chloromethyl)-3-(difluoromethyl)pyridine-2-carboxylate
2-Amino-3-(bromomethyl)-4-(difluoromethyl)pyridine-6-carboxaldehyde