title: (3S,7R)-7,14,16-Trihy-droxy-3-methyl-3,4,5,6,7,8,9,10,11,12-deca-hydro-1H-2-benzoxacyclo-tetra-decin-1-one.
abstract: The asymmetric unit of the title compound, C(18)H(26)O(5), which is known as α-zearalanol, contains two mol-ecules having the same conformation, with a r.m.s. deviation of less than 0.03 Å for all non-H atoms. In each independent mol-ecule, an intra-molecular O-H⋯O hydrogen bond stabilizes the mol-ecular conformation. In the crystal, O-H⋯O hydrogen bonds link the mol-ecules, forming infinite chains along [110] and [1-10].
authors.affiliation: BAM Federal Institute for Materials Research and Testing, Department of Analytical Chemistry, Reference Materials, Richard-Willstätter-Strasse 11, D-12489 Berlin,  Germany.
authors.forename: Sarah
authors.initials: S
authors.lastname: Drzymala
authors.forename: Werner
authors.initials: W
authors.lastname: Kraus
authors.forename: Franziska
authors.initials: F
authors.lastname: Emmerling
authors.forename: Matthias
authors.initials: M
authors.lastname: Koch