NDSB 223 is a nondetergent sulfobetaine. NDSB are highly soluble agents used for protein solubilization in a wide range of conditions. They are zwitterionic over a wide pH range and thus bear no net charge in the usual pH range used in biochemistry. The absence of a significant denaturation effect by NDSB has been demonstrated by tests on ß-galactosidase and alkaline phosphatase.
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