Methyl 3-chloro-4-(difluoromethyl)-5-fluoropyridine-2-carboxylate
Ethyl 4-chloro-6-(difluoromethyl)-2-iodopyridine-3-carboxylate
Methyl 3-chloro-6-(difluoromethyl)-2-iodopyridine-4-carboxylate
3-Chloro-2-(difluoromethyl)-6-fluoropyridine-5-acetic acid