5-(Chloromethyl)-4-(difluoromethyl)-2-methoxypyridine-3-carboxaldehyde
2-(Difluoromethyl)-3-methoxy-4-(trifluoromethoxy)pyridine
3-(Chloromethyl)-4-(difluoromethyl)-5-methoxypyridine-2-carboxaldehyde
3-Iodo-2-(trifluoromethoxy)pyridine-6-carboxaldehyde