2-Benzenesulfonamido-3-methylbutyric acid

Abstract

In the crystal structure of the title compound, C11H 15NO4S, two independent molecules are present per asymmetric unit; they are dimerized through O - H⋯O hydrogen bonds between their carb-oxy 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.