6-hydroxy-2-oxochromene-3-carbonitrile

ethyl 6-hydroxy-2-imino-2H-chromene-3-carboxylate

2-氰基-3-乙氧基巴豆酸乙酯

N-(1,3-Benzodioxol-5-ylmethyl)-2-cyanoacetamide

二乙基2-氯-1,3-薁二羧酸酯