8-acetyl-7-[3-[bis(2-hydroxyethyl)amino]-2-hydroxypropoxy]-4-methylchromen-2-one

8-acetyl-7-[2-hydroxy-3-(propan-2-ylamino)propoxy]-4-methylchromen-2-one

8-acetyl-7-methoxy-4-methylchromen-2-one

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

8-acetyl-7-hydroxy-4-methyl-6-prop-2-enylchromen-2-one