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5,5′-Dithiobis(2-nitrobenzoic acid)

SIGMA/D8130 - ≥98%, BioReagent, suitable for determination of sulfhydryl groups

Synonym: 3-Carboxy-4-nitrophenyl disulfide; 6,6′-Dinitro-3,3′-dithiodibenzoic acid; Bis(3-carboxy-4-nitrophenyl) disulfide; DTNB; Ellman’s Reagent

CAS Number: 69-78-3
Empirical Formula (Hill Notation): C14H8N2O8S2
Molecular Weight: 396.35
EC Number: 200-714-4
MDL Number: MFCD00007140
Linear Formula: [-SC6H3(NO2)CO2H]2
Product Type: Chemical
Catalog Number PKG Qty. Price Quantity
45-D8130-500MG 500 mg
 $28.40
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45-D8130-1G 1 g
 $51.50
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45-D8130-5G 5 g
 $125.00
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45-D8130-10G 10 g
 $233.00
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45-D8130-25G 25 g
 $471.00
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45-D8130-100G 100 g
 $1810.00
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This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material.

This image depicts SKU: D8130-25G
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material.

This image depicts SKU: D8130-100G
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material.

This image depicts SKU: D8130-1G
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material.

This image depicts SKU: D8130-5G
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: D8130-500MG
12 Principles of Green Chemistry: Principle 2—Atom Economy.  This product was designed to maximize the incorporation of all raw materials used in the manufacturing process.
12 Principles of Green Chemistry: Principle 7—A raw material or feedstock should be renewable rather than depleting whenever technically and economically practicable.
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assay ≥98%
form powder
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
mp 240-245 °C (dec.) (lit.)
product line BioReagent
Quality Level 200 
SMILES string OC(=O)c1cc(SSc2ccc(c(c2)C(O)=O)[N+]([O-])=O)ccc1[N+]([O-])=O
suitability suitable for determination of sulfhydryl groups
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