2,6-二氟吡啶-3,4-二胺

4,6-difluoro-1H-imidazo[4,5-c]pyridine

3-chloro-2,6-difluoro-5-nitropyridin-4-amine

3,5-dichloro-2,6-difluoro-4-phenylmethoxypyridine