title: 1,6-Dihydr-oxy-3-hydroxy-methyl-8-methoxy-anthracene-9,10-dione monohydrate.
abstract: The title compound, C(16)H(12)O(6)·H(2)O, isolated from the halotolerant fungus Aspergillus variecolor B-17, is also known as questinol monohydrate. In the crystal structure, O-H⋯O hydrogen bonds link the mol-ecules, forming a three-dimensional network. π-π stacking inter-actions consolidate the supra-molecular structure [the shortest inter-planar distances are 3.456 (3), 3.366 (4) and 3.382 (4) Å].
authors.affiliation: Key Laboratory of Marine Drugs of the Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, 266003 Qingdao, People's Republic of China.
authors.forename: Wen-Liang
authors.initials: WL
authors.lastname: Wang
authors.forename: Wei
authors.initials: W
authors.lastname: Sun
authors.forename: Qian-Qun
authors.initials: QQ
authors.lastname: Gu
authors.forename: Wei-Ming
authors.initials: WM
authors.lastname: Zhu