(2E)-3-[(1E)-2-(5-Nitro­isoxazol-3-yl)­vinyl­oxy]­prop-2-enal

The title compound, (2E)-3-[(1E)-2-(5-nitro­isoxazol-3-yl)­vinyl­oxy]­prop-2-enal, C₈H₆N₂O₅, was an unexpected product of the direct reaction of furan and nitro­acetyl­ene. It crystallizes in the monoclinic space group P2₁/c, and is an unsaturated compound with a density of 1.507 g cm⁻³. As a result of cooperative C—H⋯O hydrogen bonding, the title compound forms centrosymmetric planar dimers, which pack in stacks of almost-planar parallel layers.