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