3-Hydroxy-2-(4-methoxybenzenesulfonamido)butanoic acid

Abstract

The title compound, C11H15NO6S, features a distorted tetrahedral geometry for the S atom. One of the sulfonamide O atoms is approximately coplanar with the benzene ring [C—C—S—O torsion angle = −160.81 (7)°], whereas the other lies well below the plane [C—C—S—O = −29.66 (8)°]. In the crystal, O—H...O and C—H...O hydrogen bonds link the molecules into chains parallel to the b axis.