title: 2,3,4-Trihydroxy-benzaldehyde.
abstract: The title compound, C(7)H(6)O(4), crystallizes with two independent mol-ecules in the asymmetric unit. In both mol-ecules, the 2-hydr-oxy group is bound via intra-molecular hydrogen bonds to the aldehyde group. The mol-ecules inter-act through O-H⋯O hydrogen bonds to form a three-dimensional network structure; each hydr-oxy group serves as a donor to only one acceptor atom.
authors.affiliation: Department of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia.
authors.forename: Seik Weng
authors.initials: SW
authors.lastname: Ng