title: 9-O-Butyl-berberrubinium bromide.
abstract: In the title compound, C(23)H(24)NO(4) (+)·Br(-), the butyl chain is disordered between two conformations; the occupancies refined to 0.735 (7) and 0.265 (7). The dihedral angle between the naphthalene ring system and the phenyl ring is 11.6 (2)°. In the crystal structure, the cations are packed via π-π inter-actions into stacks propagating in the [010] direction. Weak inter-molecular C-H⋯O and C-H⋯Br hydrogen bonds contribute further to the crystal packing stability.
authors.forename: Zhu
authors.initials: Z
authors.lastname: Chen
authors.forename: Xue-Gang
authors.initials: XG
authors.lastname: Li
authors.forename: Yong-Sheng
authors.initials: YS
authors.lastname: Xie
authors.forename: Xiao-Li
authors.initials: XL
authors.lastname: Ye