Methyl 2-amino-3-(difluoromethyl)-5-iodopyridine-4-acetate
Methyl 6-amino-2-chloro-4-(difluoromethyl)pyridine-3-carboxylate
Methyl 2-amino-6-chloro-3-(difluoromethyl)pyridine-4-carboxylate
Methyl 6-amino-3-chloro-4-(difluoromethyl)pyridine-2-carboxylate