title: 2,5-Dihydroxy-benzaldehyde 4-methyl-thio-semicarbazone.
abstract: The planar mol-ecules of the title compound, C(9)H(11)N(3)O(2)S, are linked into a supra-molecualr chain via O-H⋯S hydrogen bonds. These chains are connected into a two-dimensional array via N-H⋯O hydrogen bonds; an intra-molecular O-H⋯N hydrogen bond is also present.
authors.forename: Kong Wai
authors.initials: KW
authors.lastname: Tan
authors.forename: Chew Hee
authors.initials: CH
authors.lastname: Ng
authors.forename: Mohd Jamil
authors.initials: MJ
authors.lastname: Maah
authors.forename: Seik Weng
authors.initials: SW
authors.lastname: Ng