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