Ethyl 3-chloro-4-(difluoromethyl)-6-fluoropyridine-2-carboxylate
Methyl 4-(aminomethyl)-2-bromo-3-(difluoromethyl)pyridine-6-carboxylate
Methyl 5-(aminomethyl)-3-bromo-2-(difluoromethyl)pyridine-4-carboxylate
Ethyl 3-chloro-4-(difluoromethyl)-2-fluoropyridine-5-carboxylate