title: 3-Ethyl-4-hy-droxy-8-meth-oxy-quinolin-2(1H)-one.
abstract: In the title compound, C(12)H(13)NO(3), the quinoline ring system is approximately planar with a maximum deviation from the least-squares plane of 0.058 (2) Å. In the crystal, N-H⋯O and O-H⋯O hydrogen bonds link the mol-ecules into chains running along the b-axis direction. The chains also feature π-π inter-actions between pyridine and benzene rings of inversion-related mol-ecules [centroid-centroid distance = 3.609 (2) Å].
authors.affiliation: Department of Chemistry, Faculty of Technology, Tomas Bata University in Zlin, Zlin 76272,  Czech Republic.
authors.forename: Stanislav
authors.initials: S
authors.lastname: Kafka
authors.forename: Andrej
authors.initials: A
authors.lastname: Pevec
authors.forename: Karel
authors.initials: K
authors.lastname: Proisl
authors.forename: Roman
authors.initials: R
authors.lastname: Kimmel
authors.forename: Janez
authors.initials: J
authors.lastname: Košmrlj