Methyl 3-chloro-4-(difluoromethyl)-2-iodopyridine-5-carboxylate
Methyl 3-bromo-5-(bromomethyl)-2-(difluoromethyl)pyridine-4-carboxylate
Methyl 6-chloro-3-(difluoromethyl)-4-iodopyridine-2-carboxylate
4-Chloro-3-(difluoromethyl)-2-hydroxy-6-nitropyridine