title: 2,2'-[4-Acetyl-1,3-phenyl-enebis(-oxy)]diacetic acid.
abstract: In the title compound, C12H12O7, the dihedral angles between the benzene ring and the mean planes of the 3-carb-oxy-meth-oxy, 1-carb-oxy-meth-oxy and acetyl substituents are 8.67 (7), 7.81 (6) and 10.3 (18)°, respectively. In the crystal, mol-ecules are linked by typical carb-oxy-lic acid O-H⋯O hydrogen bonds, forming a zigzag chain. C-H⋯O inter-actions also occur.
authors.affiliation: School of Chemistry & Environmental Engineering, Jiujiang University, Jiujiang 332005, People's Republic of China.
authors.forename: Jian-Guo
authors.initials: JG
authors.lastname: Wang
authors.forename: Ping
authors.initials: P
authors.lastname: Yan
authors.forename: Chan-Juan
authors.initials: CJ
authors.lastname: Zhong
authors.forename: Guo-Zhen
authors.initials: GZ
authors.lastname: Yu