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