NDSB 201 is a zwitterionic compound that is used in protein crystallization and refolding.
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Backer, M.V.; et. al. (2004) Adapter protein for site-specific conjugation of payloads for targeted drug delivery. Bioconjugate Chem. 15, 1021-1029.
-In this paper, researchers obtained HuS(N88C) with a free C88 SH-group, BHRNase(N88C) was incubated at 4 °C for 16 h in the presence of 1.5-fold molar excess of DTT and 0.5 M NDSB-221. Unfortunately, they probably overpaid for their NDSB since they purchased this item from Novagen, but nice to see the molecule was beneficial.