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Acta Cryst. (2012). E68, o2665
[ doi:10.1107/S1600536812034393 ]

2-Benzenesulfonamido-3-methylbutyric acid

M. N. Arshad, M. Danish, M. N. Tahir, Z. U. Aabideen and A. M. Asiri

Abstract: In the crystal structure of the title compound, C11H15NO4S, two independent molecules are present per asymmetric unit; they are dimerized through O-H...O hydrogen bonds between their carboxy groups to generate R22(8) loops. An intramolecular N-H...O link in one of the molecules closes an S(5) ring. The dimers are linked by N-H...O and C-H...O hydrogen bonds to form a three-dimensional network. The C atoms of the isopropyl group of one of the molecules are disordered over two orientations in a 3:1 ratio.

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