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Home > Encyclopedia > 5,5′-Dithiobis[2-nitrobenzoic acid]

5,5′-Dithiobis[2-nitrobenzoic acid]

5,5′-Dithiobis[2-nitrobenzoic acid] structure

5,5′-Dithiobis[2-nitrobenzoic acid] 

structure
  • CAS No:

    69-78-3

  • Formula:

    C14H8N2O8S2

  • Chemical Name:

    5,5′-Dithiobis[2-nitrobenzoic acid]

  • Synonyms:

    Benzoic acid,3,3′-dithiobis[6-nitro-;3,3′-Dithiobis[6-nitrobenzoic acid];5,5′-Dithiobis[2-nitrobenzoic acid];DTNB;Ba 2767;Named reagents and solutions,Ellman's;2,2′-Dinitro-5,5′-dithiodibenzoic acid;Ellmans reagent;Reagents,Ellman's;3-Carboxy-4-nitrophenyl disulfide

  • Categories:

    Organic Chemistry  >  Hydrocarbons and Derivatives

Description

DTNB(Ellman’s Reag) is a chemical used to quantify the number or concentration of thiol groups in a sample; can be used for measuring low-molecular mass thiols such as glutathione in both pure solutions and biological samples, such as blood.


Dithionitrobenzoic acid is an organic disulfide that results from the formal oxidative dimerisation of 2-nitro-5-thiobenzoic acid. An indicator used to quantify the number or concentration of thiol groups. It has a role as an indicator. It is a nitrobenzoic acid and an organic disulfide.|A standard reagent for the determination of reactive sulfhydryl groups by absorbance measurements. It is used primarily for the determination of sulfhydryl and disulfide groups in proteins. The color produced is due to the formation of a thio anion, 3-carboxyl-4-nitrothiophenolate.

5,5′-Dithiobis[2-nitrobenzoic acid] Basic Attributes

396.35

396.35

1896821

200-714-4

9BZQ3U62JX

DTXSID5058779

29309070

Characteristics

217

2.7

Yellow solid.

1.8±0.1 g/cm3

237-238 °C (decomp)

671.9°C at 760 mmHg

360.1±31.5 °C

1.769

soluble in water and ethanol.

Store at RT.

Safety Information

NONH for all modes of transport

3

36/37/38

26-36

DG9650000

Xi

Stable. Incompatible with strong bases, strong oxidizing agents.

P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, P501

H315

|Warning|H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]|P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, and P501|Aggregated GHS information provided by 51 companies from 6 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Drug Information

Chemical agents that react with SH groups. This is a chemically diverse group that is used for a variety of purposes. Among these are enzyme inhibition, enzyme reactivation or protection, and labelling. (See all compounds classified as Sulfhydryl Reagents.)

5,5'-Dithiobis(2-nitrobenzoic Acid)

5,5′-Dithiobis[2-nitrobenzoic acid] Use and Manufacturing

Uses

3,3'-Dithiobis[6-nitrobenzoic Acid is an membrane-impermeant thiol/disulfide exchange blocker. 3,3'-Dithiobis[6-nitrobenzoic Acid is also used to quantify the number or concentration of thiol groups in a sample.

Benzoic acid, 3,3'-dithiobis[6-nitro-: ACTIVE

Computed Properties

Molecular Weight:396.4
XLogP3:2.7
Hydrogen Bond Donor Count:2
Hydrogen Bond Acceptor Count:10
Rotatable Bond Count:5
Exact Mass:395.97220756
Monoisotopic Mass:395.97220756
Topological Polar Surface Area:217
Heavy Atom Count:26
Complexity:528
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes

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