Acta Cryst. (2003). E59, o1208-o1209  [ doi:10.1107/S1600536803016313 ]

8-Hydroxy-(S)-3-methyl-1-oxoisochromane-5-carboxylic acid (5-carboxymellein)

J.-F. Wang, M.-J. Fang, Y.-F. Zhao, Y.-J. Huang, W.-J. Su and S. W. Ng

Abstract: The molecules of the title compound, C₁₁H₁₀O₅, are linked by a hydrogen bond involving the acid H and the carbonyl O atom of the dihydroisocoumarin unit into a linear chain running along the b axis of the monoclinic unit cell.

Online 31 July 2003

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