title: 1-Methyl-3-(3-oxocyclo-hex-1-en-yl)azepan-2-one.
abstract: The title compound, C(13)H(19)NO(2), is a inter-mediate in the synthesis of the opioid analgesic meptazinol. In the crystal structure, a weak inter-molecular C-H⋯O inter-action occurs.
authors.affiliation: Key Laboratory of Drug Targeting of the Education Ministry, West China School of Pharmacy, Sichuan University, Chengdu 610041, People's Republic of China.
authors.forename: Wei-Jia
authors.initials: WJ
authors.lastname: Liu
authors.forename: Hua-Jie
authors.initials: HJ
authors.lastname: Yuan
authors.forename: Lei
authors.initials: L
authors.lastname: Chen
authors.forename: Li
authors.initials: L
authors.lastname: Hai
authors.forename: Yong
authors.initials: Y
authors.lastname: Wu