Key indicators: single-crystal X-ray study; T = 273 K; mean (C-C) = 0.004 Å; R factor = 0.024; wR factor = 0.054; data-to-parameter ratio = 20.0.The asymmetric unit of the title compound, (C 5 Table 1 Selected geometric parameters (Å , ).

No abstract

The title compond, C19H24O5·H2O, has two gibberellin A4 mol­ecules and two water mol­ecules 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.