title: 4-Chloro-1-methyl-indoline-2,3-dione.
abstract: The title mol-ecule, C(9)H(6)ClNO(2), is essentially planar; the maximum deviation of the indoline ring system is 0.027 (3) Å and the substituents do not deviate by more than 0.075 (2) Å from this plane. Inter-molecular C-H⋯O hydrogen bonds consolidate the crystal structure.
authors.forename: Jian Guang
authors.initials: JG
authors.lastname: Yu
authors.forename: Wei
authors.initials: W
authors.lastname: Tang
authors.forename: De Cai
authors.initials: de C
authors.lastname: Wang
authors.forename: Hong
authors.initials: H
authors.lastname: Xu