Ellman's reagent

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Bis(4‐nitro‐5‐carboxyl phenyl)disulfide, (formerly 5,5′‐dithiobis(2‐nitrobenzoic acid) (abbr.: DTNB); a reagent used for labelling thiol (SH) groups in protein side‐chains. The reagent reacts quantitatively with thiol groups, forming mixed disulfides and releasing ...

Subjects: Chemistry.

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