5-(Aminomethyl)-2-(difluoromethyl)-3-hydroxy-6-iodopyridine
3-(Difluoromethyl)-2-hydroxy-4-iodo-6-(trifluoromethyl)pyridine
3-(Chloromethyl)-4-(difluoromethyl)-5-fluoropyridine-2-carboxaldehyde
2-(Difluoromethyl)-6-hydroxy-5-iodopyridine-3-carboxaldehyde