5,5prime-Dithio-bis-(2-nitrobenzoic Acid) A sulfhydryl reagent used to characterize reactive thiol groups

5,5′-Dithio-bis-(2-nitrobenzoic Acid) (CAS 69-78-3)

5,5′-Dithio-bis-(2-nitrobenzoic Acid), CAS 69-78-3 is rated 5.0 out of 5 by 3.
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Synonym: DTNB; Ellman's Reagent
Application: A sulfhydryl reagent used to characterize reactive thiol groups
CAS Number: 69-78-3
Purity: ≥99%
Molecular Weight: 396.35
Molecular Formula: C14H8N2O8S2
* Refer to Certificate of Analysis for lot specific data (including water content).
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5,5'-Dithio-bis-(2-nitrobenzoic Acid) is a sulfhydryl reagent used to characterize reactive thiol groups. Used for measuring the free sulfhydryl content in proteins, peptides, and tissues. Also useful in photometric determination of thiols.

Appearance :
Crystalline powder
Physical State :
Solid
Solubility :
Soluble in 100% ethanol, dioxane, and Phosphate buffer.
Storage :
Store at 4° C
Melting Point :
240-245° C (lit.)(dec.)
Boiling Point :
671.86° C at 760 mmHg (Predicted)
Density :
1.79 g/cm3 (Predicted)
Refractive Index :
n20D 1.77 (Predicted)
IC50 :
Thymidylate kinase: IC50 = 1.53 µM (human)
pK Values :
pKa: 1.57 (Predicted)
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
WGK Germany :
3
RTECS :
DG9650000
PubChem CID :
6254
Merck Index :
14: 3551
MDL Number :
MFCD00007140
EC Number :
200-714-4
Beilstein Registry :
1896821
SMILES :
C1=CC(=C(C=C1SSC2=CC(=C(C=C2)[N+](=O)[O-])C(=O)O)C(=O)O)[N+](=O)[O-]

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Certificate of Analysis

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I need the due date for DTNB lot G2216 asap please. Cristina de Melo State University of Londrina PR Brazil

Asked by: Cristina de Melo
Manufacturing, expiration, and retest dates are not provided on our Certificates of Analysis for list products, although, all of our products are warrantied for one year from the date purchased.
Answered by: Technical Support
Date published: 2017-11-15
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Rated 5 out of 5 by from good delivery is super quick. thx
Date published: 2018-07-30
Rated 5 out of 5 by from Good Buy The reagent met and surpassed my expectations. Will buy again
Date published: 2017-02-19
Rated 5 out of 5 by from Various publications cite the use of DTNB (5 Various publications cite the use of DTNB (5,5 -Dithio-bis-(2-nitrobenzoic Acid); Ellman's Reagent), a sulfhydryl reagent, to characterize reactive thiol groups. Used for measuring the free sulfhydryl content in proteins, peptides, and tissues. -SCBT Publication Review
Date published: 2015-07-01
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