Ethyl 3-amino-5-(difluoromethyl)-2-(trifluoromethyl)pyridine-6-carboxylate
Ethyl 3-bromo-6-chloro-4-(difluoromethyl)pyridine-2-carboxylate
3-Amino-6-(chloromethyl)-2-(difluoromethyl)pyridine-4-acetonitrile
5-Amino-4-(bromomethyl)-3-(difluoromethyl)pyridine-2-carboxylic acid