title: 5-Butyl-amino-6-(4-fluoro-phen-yl)-7-oxo-1-p-tolyl-6,7-dihydro-1H-pyrazolo[4,3-d]pyrimidine-3-carbonitrile.
abstract: In the title compound, C(23)H(21)FN(6)O, the dihedral angle between the fluoro-phenyl and pyrimidinone rings is 75.9 (1)°, and the dihedral angle between the methyl-phenyl and pyrazole rings is 40.3 (1)°. In the crystal structure, weak C-H⋯π(arene) and C-N⋯π(arene) inter-actions and intermolecular C-H⋯N and N-H⋯O hydrogen-bonding inter-actions are present.
authors.forename: Ji-Huan
authors.initials: JH
authors.lastname: Hu
authors.forename: Ming-Hu
authors.initials: MH
authors.lastname: Wu