2-cyano-3-(5-methyl-1(2)H-pyrazol-3-ylamino)-acrylic acid ethyl ester

6-methyl-4-oxoquinolizine-1,3-dicarbonitrile

7-溴-4-氧代-1,4-二氢-喹啉-3-甲腈

5-氨基-1-叔丁基吡唑-4-甲酸乙酯

6-氧代-2-苯基-1,6-二氢-嘧啶-5-甲腈