7-乙酰氧基-4-溴甲基香豆素

3-氯-7-羟基-4-甲基香豆素

(4-methyl-2-oxochromen-7-yl) 2-bromoacetate

8-[1-(hydroxyamino)ethylidene]-4-methylchromene-2,7-dione

(4-formyl-2-oxochromen-7-yl) acetate