title: (Z)-2-Hydr-oxy-3-(4-methoxy-phen-yl)acrylic acid.
abstract: In the structure of the title compound, C(10)H(10)O(4), inversion dimers linked by pairs of O-H⋯O hydrogen bonds link the carboxylic acid groups. Further O-H⋯O links cross-link the dimers into sheets running along the b-axis direction.
authors.affiliation: Key Laboratory of Hunan Forest Products and Chemical Industry Engineering, Jishou University, Jishou 416000, People's Republic of China.
authors.forename: Hui
authors.initials: H
authors.lastname: Ouyang
authors.forename: Qi-Jian
authors.initials: QJ
authors.lastname: Tian
authors.forename: Yong-Dong
authors.initials: YD
authors.lastname: Jiang
authors.forename: Chun-Lian
authors.initials: CL
authors.lastname: Tian