Crystal structure of 1-(8-meth­oxy-2H-chromen-3-yl)ethanone

In the structure of the title compound, C(12)H(12)O(3), the di­hydro­pyran ring is fused with the benzene ring. The di­hydro­pyran ring is in a half-chair conformation, with the ring O and methyl­ene C atoms positioned 1.367 (3) and 1.504 (4) Å, respectively, on either side of the mean plane formed by the other four atoms. The meth­oxy group is coplanar with the benzene ring to which it is connected [C(b)—Cb—O(m)—C(m) torsion angle = −0.2 (4)°; b = benzene and m = meth­oxy], and similarly the aldehyde is coplanar with respect to the double bond of the di­hydro­pyran ring [C(dh)—C(dh)—C(a)—O(a) = −178.1 (3)°; dh = di­hydro­pyran and a = aldehyde]. In the crystal, mol­ecules are linked by weak meth­yl–meth­oxy C—H⋯O hydrogen bonds into supra­molecular chains along the a-axis direction.