title: 3,5,6-Trimethyl-thieno[2,3-d]pyrimidin-4(3H)-one.
abstract: In the title compound, C(9)H(10)N(2)OS, the thienopyrimidine ring system is almost planar [greatest deviation from the mean plane = 0.0318 (13) Å for the S atom]. The crystal packing features C-H⋯O hydrogen bonds and π-π stacking inter-actions between inversion-related pairs of mol-ecules with a centroid-centroid distance of 3.530 (3) Å.
authors.forename: Khamroqul
authors.initials: K
authors.lastname: Khatamov
authors.forename: Fozil
authors.initials: F
authors.lastname: Saitqulov
authors.forename: Jamshid
authors.initials: J
authors.lastname: Ashurov
authors.forename: Khusnutdin
authors.initials: K
authors.lastname: Shakhidoyatov