3-(4-氨基苯基)-3-氧代丙腈

5,5-dimethyl-2-oxooxolane-3-carbonitrile

2-氰基-3-甲基-丁二酸二乙酯

2,6-diamino-1-methylpyrimidin-4-one

diethyl 2,5-dicyanohexanedioate