Ethyl 4-amino-2-chloro-3-(difluoromethyl)pyridine-5-carboxylate
4-Amino-5-chloro-2-(difluoromethyl)pyridine-3-acetonitrile
Ethyl 5-amino-3-chloro-4-(difluoromethyl)pyridine-2-carboxylate
Ethyl 3-amino-5-chloro-2-(difluoromethyl)pyridine-4-carboxylate