7-Benzyl-3-(4-fluoro­phen­yl)-2-propyl­amino-5,6,7,8-tetra­hydro­pyrido[4′,3′:4,5]thieno[2,3-d]pyrimidin-4(3H)-one

In the title compound, C₂₅H₂₅FN₄OS, the thienopyrimidine fused-ring system is close to planar (r.m.s. deviation = 0.0089 Å), with a maximum deviation of 0.0261 (17) Å for the N atom adjacent to the benzene ring. This thienopyrimidine fused-ring system forms dihedral angles of 64.73 (3) and 81.56 (5)° with the adjacent benzyl and fluoro­phenyl rings, respectively. Inter­molecular N—H...F and C—H...F hydrogen bonding, as well as C—F...π inter­actions [F...centroid = 3.449 (3) Å; C—F...centroid = 91.87 (15)°], help to stabilize the crystal structure.