β-Amino-α-cyan-(1,2-dihydro-2-oxo-1-benzopyran-3-yl)-propensaeuremethylester

香豆素-3腈

5-[(2-methoxyphenyl)methylidene]-2,2-dimethyl-1,3-dioxane-4,6-dione

香豆素-3-甲酰氯

2-iminochromene-3-carbonitrile