5,5′-Dithiobis(2-nitrobenzoic acid)

Descrição detalhada : 5,5?-Dithiobis(2-nitrobenzoic acid) is also called DTNB or Ellman?s reagent. It is a water soluble reagent, which interacts with thiol groups, and can be used conveniently at neutral pH. Thiolate anion (RS-) reacts with Ellman?s reagent (DTNB2-), to produce 2-nitro-5-thiobenzoate anion (TNB2-) and one mixed disulfide (R-S-TNB-). TNB2- has a high molar absorption coefficient, and absorbs at 412nm. This absorption is independent of pH, at pH> 7.3.
Sinónimos : 3-Carboxy-4-nitrophenyl disulfide; 6,6'-Dinitro-3,3'-dithiodibenzoic acid; Bis(3-carboxy-4-nitrophenyl) disulfide; DTNB; Ellman's Reagent
Fórmula molecula r: [-SC6H3(NO2)CO2H]2
Armazenamento : Room Temperature
Embalagem : 1X100G