Ethyl 2-(chloromethyl)-6-(difluoromethyl)-3-methoxypyridine-4-carboxylate
4-(Chloromethyl)-3-(difluoromethyl)-2-methoxypyridine-6-carboxaldehyde
3-(Difluoromethyl)-5-iodo-4-(trifluoromethoxy)pyridine
4-(Chloromethyl)-2-(difluoromethyl)-3-methoxypyridine-6-carboxaldehyde