title: 1-Ethyl-3-methyl-quinoxalin-2(1H)-one.
abstract: The asymmetric unit of the title compound, C(11)H(12)N(2)O, contains two independent mol-ecules. In the crystal structure, inter-molecular C-H⋯O hydrogen bonds link the mol-ecules. There are π-π contacts between the quinoxaline rings [centroid-centroid distances = 3.446 (2), 3.665 (2), 3.645 (3) and 3.815 (3) Å]. There also exist C-H⋯π contacts between the methyl groups and the quinoxaline rings.
authors.forename: Hanane
authors.initials: H
authors.lastname: Benzeid
authors.forename: Laure
authors.initials: L
authors.lastname: Vendier
authors.forename: Youssef
authors.initials: Y
authors.lastname: Ramli
authors.forename: Bernard
authors.initials: B
authors.lastname: Garrigues
authors.forename: El Mokhtar
authors.initials: el M
authors.lastname: Essassi