Acta Cryst. (2004). E60, o1328-o1329  [ doi:10.1107/S1600536804016587 ]

2-[4-(2-Hydroxyethyl)piperazin-1-yl]ethanesulfonic acid

F. Gao, C. Yin, P. Yang and G. Xue

Abstract: The title compound, C₈H₁₈N₂O₄S, is a useful buffer in the physiological pH range. In the crystal structure, the piperazine ring adopts a chair conformation. One weak intramolecular C-HO hydrogen bond, together with one weak intermolecular C-HO and two strong intermolecular O-HN hydrogen bonds are present, the latter linking the molecules into a reticulation framework.

Online 17 July 2004

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