title: 2-(3,4-Dimethyl-5,5-dioxo-2H,4H-pyrazolo[4,3-c][1,2]benzothia-zin-2-yl)-N'-(2-thienylmethyl-idene)acetohydrazide.
abstract: In the title mol-ecule, C(18)H(17)N(5)O(3)S(2), the heterocyclic thia-zine ring adopts a twist boat conformation, with the S and N atoms displaced by 0.480 (7) and 0.205 (8) Å, respectively, on opposite sides of the mean plane formed by the remaining ring atoms. The pyrazole and benzene rings are tilted at an angle of 10.9 (2)° with respect to one another. The crystal structure is stabilized by inter-molecular N-H⋯O and C-H⋯N hydrogen bonds, resulting in dimers forming nine-membered rings of graph-set motif R(2) (2)(9). In addition, inter-molecular C-H⋯O inter-actions result in chains of mol-ecules along the c axis, further consolidating the crystal packing.
authors.forename: Matloob
authors.initials: M
authors.lastname: Ahmad
authors.forename: Hamid Latif
authors.initials: HL
authors.lastname: Siddiqui
authors.forename: Altaf Hussain
authors.initials: AH
authors.lastname: Khan
authors.forename: Masood
authors.initials: M
authors.lastname: Parvez