title: Gibberellin A4 monohydrate.
abstract: The title compond, C(19)H(24)O(5)·H(2)O, has two gibberellin A4 mol-ecules and two water mol-ecules in the asymmetric unit. The A and B rings have chair conformations, whereas the C and D rings have envelope conformations; the two rings which contain the lactone and carbonyl bridge adopt chair and envelope conformations. The crystal structure is established by O-H⋯O hydrogen bonds and supported by C-H⋯O hydrogen bonds.
authors.affiliation: College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China.
authors.forename: Yun-Fen
authors.initials: YF
authors.lastname: Hua
authors.forename: Hai Yan
authors.initials: HY
authors.lastname: Li
authors.forename: Lin Lin
authors.initials: LL
authors.lastname: Ma
authors.forename: Xing
authors.initials: X
authors.lastname: Zhang
authors.forename: Zhi Min
authors.initials: ZM
authors.lastname: Jin