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