title: 4,5-Dichloro-2-methyl-pyridazin-3(2H)-one.
abstract: The asymmetric unit of the title compound, C(5)H(4)Cl(2)N(2)O, contains one half-mol-ecule: all the non-H atoms lie on a crystallographic mirror plane. In the crystal structure, mol-ecules are linked into chains along the c axis by weak inter-molecular C-H⋯O hydrogen bonds.
authors.forename: Jia Hao
authors.initials: JH
authors.lastname: Goh
authors.forename: Hoong-Kun
authors.initials: HK
authors.lastname: Fun
authors.forename: P V R
authors.initials: PV
authors.lastname: Rukmini
authors.forename: B
authors.initials: B
authors.lastname: Kalluraya