4-乙基-2-吡啶甲腈

ethyl 4-cyano-4H-quinazoline-3-carboxylate

1-(4-chlorobenzoyl)-4-methyl-2H-quinazoline-2-carbonitrile

2-氰基-4-甲氧基嘧啶

4,7-dimethoxy-3-oxo-1H-2-benzofuran-1-carbonitrile