title: Crystal structure of ethyl 2-{4-[(5-chloro-1-benzo-furan-2-yl)meth-yl]-3-methyl-6-oxo-1,6-di-hydro-pyridazin-1-yl}acetate.
abstract: In the title compound, C18H17ClN2O4, the dihedral angle between the benzofuran ring system [maximum deviation 0.014 (2) Å] and the oxopyradizine ring is 73.33 (8)°. The structure is characterized by disorder of the ethyl group, which is split into two parts, with a major component of 0.57 (3), and the acetate carbonyl O atom, which is statistically disordered. In the crystal, the molecules are linked by C-H⋯O inter-actions, forming a three-dimensional network.
authors.affiliation: Laboratory of Medicinal Chemistry, Faculty of Medicine and Pharmacy, BP 6203, Rabat Institute, University Mohammed V, Rabat, Morocco.
authors.forename: Youness
authors.initials: Y
authors.lastname: Boukharsa
authors.affiliation: Laboratoire de Chimie du Solide Appliquée, Faculté des Sciences, Université Mohammed V, Avenue Ibn Battouta, BP. 1014, Rabat, Morocco.
authors.forename: Lahcen
authors.initials: L
authors.lastname: El Ammari
authors.affiliation: Laboratory of Medicinal Chemistry, Faculty of Medicine and Pharmacy, BP 6203, Rabat Institute, University Mohammed V, Rabat, Morocco.
authors.forename: Jamal
authors.initials: J
authors.lastname: Taoufik
authors.affiliation: Laboratoire de Chimie du Solide Appliquée, Faculté des Sciences, Université Mohammed V, Avenue Ibn Battouta, BP. 1014, Rabat, Morocco.
authors.forename: Mohamed
authors.initials: M
authors.lastname: Saadi
authors.affiliation: Laboratory of Medicinal Chemistry, Faculty of Medicine and Pharmacy, BP 6203, Rabat Institute, University Mohammed V, Rabat, Morocco.
authors.forename: M'hammed
authors.initials: M
authors.lastname: Ansar
keywords: crystal structure; hydrogen bonding; pyridazinone derivative