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