title: 4-Hydroxy-1-methyl-2-oxo-N-(4-oxo-2-propyl-3,4-dihydroquinazolin-3-yl)-1,2-dihydroquinoline-3-carboxamide.
abstract: The two bicyclic fragments of the title compound, C(22)H(20)N(4)O(4), are individually planar and are turned with respect to each other by 77.8 (2) degrees. The formation of intramolecular O-H.O and N-H.O hydrogen bonds causes considerable changes in the bond lengths within the amidopyridine fragment.
authors.affiliation: Scientific Research Department of Alkali Halide Crystals, STC 'Institute for Single Crystals', National Academy of Sciences of Ukraine, 60 Lenina Ave., Khar'kov 310001, Ukraine.
authors.forename: S V
authors.initials: SV
authors.lastname: Shishkina
authors.forename: O V
authors.initials: OV
authors.lastname: Shishkin
authors.forename: I V
authors.initials: IV
authors.lastname: Ukrainets
authors.forename: N A
authors.initials: NA
authors.lastname: Jaradat
authors.forename: O V
authors.initials: OV
authors.lastname: Gorokhova