4-(Prop-2-yn-1-yl­oxy)benzaldehyde

In the title mol­ecule, C₁₀H₈O₂, all non-H atoms are essentailly coplanar (r.m.s. deviation = 0.0192 Å), indicating an effective conjugation of the carbonyl group, the benzene ring and the lone pair of the propyn­yloxy O atom. In the crystal, π–π stacking inter­actions [centroid–centroid distance = 3.5585 (15) Å] connect mol­ecules into inversion dimers which are linked by Csp—H...O=C hydrogen bonds, forming a ladder-like structure.