alpha-氰基异戊酸乙基酯

diethyl (Z)-2-cyano-3,4-dimethylpent-2-enedioate

6-hydroxy-5-(2-hydroxyethyl)-4-methyl-2-oxo-1H-pyridine-3-carbonitrile

7-(diethylamino)-3-(5-methyl-1,3-benzoxazol-2-yl)chromen-2-one

3-amino-2-methyl-1,2-oxazol-5-one