title: 1-Methyl-1,2,3,4-tetra-hydro-carbolin-2-ium-3-carboxyl-ate.
abstract: The title compound, C(13)H(14)N(2)O(2), is a natural product isolated from Cicer arietinum L. (chickpea). The benzene ring and pyrrole rings display planar conformations and the piperidine ring has a half-chair conformation. Inter-molecular C-H⋯π inter-actions between a methyl H atom and the pyrrole ring of an adjacent mol-ecule are present in the crystal structure.
authors.forename: Cheng-Tao
authors.initials: CT
authors.lastname: Lu
authors.forename: Lin-Lin
authors.initials: LL
authors.lastname: Jing
authors.forename: Hai-Bo
authors.initials: HB
authors.lastname: Wang
authors.forename: Hai-Feng
authors.initials: HF
authors.lastname: Tang
authors.forename: Xiao-Li
authors.initials: XL
authors.lastname: Sun