2-(Difluoromethyl)-6-hydroxy-5-iodopyridine-3-carboxaldehyde
Methyl 2-(chloromethyl)-5-(difluoromethyl)-6-fluoropyridine-3-carboxylate
2-(Difluoromethyl)-4-hydroxy-6-iodopyridine-3-carboxaldehyde
Methyl 2-(chloromethyl)-3-(difluoromethyl)-6-fluoropyridine-5-carboxylate