title: Crystal structure of 2-(2,3-di-meth-oxy-naphthalen-1-yl)-3-hy-droxy-6-meth-oxy-4H-chromen-4-one.
abstract: In the title compound, C22H18O6, the dimeth-oxy-substituted naphthalene ring system is twisted relative to the 4H-chromenon skeleton by 88.96 (3)°. The two meth-oxy substituents are tilted from the naphthalene ring system by 1.4 (4) and 113.0 (2)°, respectively. An intra-molecular O-H⋯O hydrogen bond closes an S(5) ring motif. In the crystal, pairs of O-H⋯O hydrogen bonds form inversion dimers with R (2) 2(10) loops and C-H⋯O inter-actions connect the dimers into [010] chains.
authors.affiliation: Division of Bioscience and Biotechnology, BMIC, Konkuk University, Seoul 143-701, Republic of Korea.
authors.forename: Seunghyun
authors.initials: S
authors.lastname: Ahn
authors.affiliation: Division of Bioscience and Biotechnology, BMIC, Konkuk University, Seoul 143-701, Republic of Korea.
authors.forename: Yoongho
authors.initials: Y
authors.lastname: Lim
authors.affiliation: Department of Applied Chemistry, Dongduk Women's University, Seoul 136-714, Republic of Korea.
authors.forename: Dongsoo
authors.initials: D
authors.lastname: Koh
keywords: crystal structure; flavonol; fluorescence; hydrogen bonding