(R,R)-Disynephrine ether bis­(hydrogen sulfate)

The asymmetric unit of the title compound [systematic name: (R,R)-2,4-bis­(4-hydroxy­phen­yl)-N,N′-dimethyl-3-oxapentane-1,5-diammonium bis­(hydrogen sulfate)], C(18)H(26)N(2)O(3) (2+)·2HSO(4) (−), contains one half-cation and one hydrogen sulfate anion. The cation has crystallographically imposed twofold symmetry with the rotation axis passing through the central ether O atom. Hydrogen bonds between the hydr­oxy group and amine H atoms of the cation to two hydrogen sulfate anions link the three ions in a ring motif. A three-dimensional network is accomplished by additional O—H⋯O hydrogen bonds between the anions and by N—H⋯O hydrogen bonds between the cations. Disorder with equally occupied sites affects the H-atom position in the anion.