MilliporeSigma
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D218200

Sigma-Aldrich

5,5′-Dithiobis(2-nitrobenzoic acid)

ReagentPlus®, 99%

Synonym(s):
3-Carboxy-4-nitrophenyl disulfide, 6,6′-Dinitro-3,3′-dithiodibenzoic acid, Bis(3-carboxy-4-nitrophenyl) disulfide, DTNB, Ellman’s Reagent
Linear Formula:
[-SC6H3(NO2)CO2H]2
CAS Number:
Molecular Weight:
396.35
Beilstein:
1896821
EC Number:
MDL number:
PubChem Substance ID:

Quality Level

product line

ReagentPlus®

assay

99%

form

powder

mp

240-245 °C (dec.) (lit.)

SMILES string

OC(=O)c1cc(SSc2ccc(c(c2)C(O)=O)[N+]([O-])=O)ccc1[N+]([O-])=O

InChI

1S/C14H8N2O8S2/c17-13(18)9-5-7(1-3-11(9)15(21)22)25-26-8-2-4-12(16(23)24)10(6-8)14(19)20/h1-6H,(H,17,18)(H,19,20)

InChI key

KIUMMUBSPKGMOY-UHFFFAOYSA-N

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Application

5,5′-Dithiobis(2-nitrobenzoic acid) is a water soluble reagent mainly used for the derivatization of sulfhydryl groups.

Packaging

1, 5 g in glass bottle
10 g in poly bottle

Legal Information

ReagentPlus is a registered trademark of Sigma-Aldrich Co. LLC

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

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Certificate of Origin

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