Received 3 September 2012
The asymmetric unit of the title compound, C18H26O5, which is known as -zearalanol, contains two molecules having the same conformation, with a r.m.s. deviation of less than 0.03 Å for all non-H atoms. In each independent molecule, an intramolecular O-HO hydrogen bond stabilizes the molecular conformation. In the crystal, O-HO hydrogen bonds link the molecules, forming infinite chains along  and [1-10].
For the chemical preparation of -zearalanol, see: Urry et al. (1966). For its natural occurrence as a metabolite, see: Baldwin et al. (1983) and for its use as an animal growth promoter, see: Wang & Wang (2007). For the crystal structures of related derivatives, see: Panneerselvam et al. (1996); Gelo-Pujic et al. (1994); Zhao et al. (2008); Köppen et al. (2012); Drzymala et al. (2012).
Data collection: APEX2 (Bruker, 2001); cell refinement: SAINT (Bruker, 2001); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: FJ2595 ).
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