Hydrangel

hydrangenol

3-(4-Hydroxyphenyl)-8-hydroxyisochroman-1-one

3,4-Dihydro-8-hydroxy-3-(4-hydroxyphenyl)-1H-2-benzopyran-1-one

3-(4-Hydroxyphenyl)-8-hydroxy-3,4-dihydro-1H-2-benzopyran-1-one