D218200
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
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About This Item
Linear Formula:
[-SC6H3(NO2)CO2H]2
CAS Number:
Molecular Weight:
396.35
UNSPSC Code:
12352100
NACRES:
NA.22
PubChem Substance ID:
EC Number:
200-714-4
Beilstein/REAXYS Number:
1896821
MDL number:
Assay:
99%
Form:
powder
Quality Segment
product line
ReagentPlus®
assay
99%
form
powder
mp
240-245 °C (dec.) (lit.)
functional group
carboxylic acid, nitro
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
General description
DTNB (Ellman’s reagent) is commonly used for quantification of sulfhydryl (thiol) groups in proteins and biomolecules.
Application
5,5′-Dithiobis(2-nitrobenzoic acid) is a water soluble reagent mainly used for the derivatization of sulfhydryl groups.
Legal Information
ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany
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Storage Class
11 - Combustible Solids
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
dust mask type N95 (US), Eyeshields, Gloves
wgk
WGK 2
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