Oxonium 2-carboxy-3-(2-furyl)acrylate

In the title compound, H3O+·C8H5O5 −, neighbouring cations and anions are linked by O—H⋯O hydrogen bonds, forming a one-dimensional chain framework along [001]. The crystal structure is further stabilized by π–π interactions, with centroid–centroid distances of 3.734 (3) Å.