title: 3-Chloro-azepan-2-one.
abstract: In the title compound, C(6)H(10)ClNO, an inter-mediate for the production of lysine, there are intra-molecular C-H⋯Cl hydrogen bonds.
authors.affiliation: State Key Laboratory of Materials-Oriented Chemcial Engineering, College of Life Science and Pharmaceutical Engineering, Nanjing University of Technology, Xinmofan Road No. 5 Nanjing, Nanjing 210009, People's Republic of China.
authors.forename: De-Cai
authors.initials: DC
authors.lastname: Wang
authors.forename: Dong-Mei
authors.initials: DM
authors.lastname: Fan
authors.forename: Hua-Quan
authors.initials: HQ
authors.lastname: Liu
authors.forename: Ping-Kai
authors.initials: PK
authors.lastname: Ou-Yang