2-(Chloromethyl)-6-(difluoromethyl)-3-methoxypyridine-5-carboxaldehyde
6-(Chloromethyl)-3-(difluoromethyl)-2-methoxypyridine-4-carboxaldehyde
2-(Chloromethyl)-5-(difluoromethyl)-3-methoxypyridine-6-carboxaldehyde
3,4-Diamino-2-(trifluoromethoxy)pyridine-6-carboxylic acid