title: 3,6,8-Trihy-droxy-3,4,5,7-tetra-methyl-3,4-dihydro-isocoumarin.
abstract: In the title compound, C(13)H(16)O(5), one of the three hy-droxy groups is involved in intra-molecular O-H⋯O hydrogen bonds. The other two hy-droxy groups contribute to the three-dimensional hydrogen-bonding network, which consolidates the crystal packing.
authors.forename: Yi-Wen
authors.initials: YW
authors.lastname: Tao
authors.forename: Yun
authors.initials: Y
authors.lastname: Wang