Ethyl 3-(aminomethyl)-2-bromo-4-(difluoromethyl)pyridine-5-acetate
Methyl 5-chloro-2-cyano-3-(difluoromethyl)pyridine-6-acetate
Methyl 4-chloro-5-cyano-2-(difluoromethyl)pyridine-3-acetate
Ethyl 2-(aminomethyl)-6-bromo-4-(difluoromethyl)pyridine-3-acetate