6-chloro-2-(2-hydroxyethylamino)-4-methylpyridine-3-carbonitrile

2-amino-6-chloro-4-methylpyridine-3-carbonitrile

6-氨基-2-氯-4-甲基-3-吡啶甲腈

6-t-butylamino-2-chloro-3-cyano-4-methylpyridine

2,6-bis(tert-butylamino)-4-methylpyridine-3-carbonitrile