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