Ethyl 5-(difluoromethyl)-2-hydroxy-3-iodopyridine-6-carboxylate
2-(Chloromethyl)-3-(difluoromethyl)-6-fluoropyridine-4-acetic acid
Ethyl 4-(difluoromethyl)-2-hydroxy-6-iodopyridine-3-carboxylate
Methyl 3-(chloromethyl)-4-(difluoromethyl)-2-fluoropyridine-6-acetate