3-acetyl-8-hydroxychromen-2-one

3-(2,3-dihydroxyphenyl)-1-(2,4-dihydroxyphenyl)prop-2-en-1-one

苯并[d[1,3]二氧代-4-羧酰胺

4-羟基-1,3-苯并二氧代

6-(3H-1,3-benzothiazol-2-ylidene)-2-hydroxycyclohexa-2,4-dien-1-one