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DTNB

Cat. No. M11509
DTNB Structure
Synonym:

Ellman’s Reagent; 5,5′-Dithiobis(2-nitrobenzoic acid)

Size Price Availability Quantity
500mg USD 40  USD40 In stock
1g USD 52  USD52 In stock
5g USD 78  USD78 In stock
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Quality Control & Documentation
Biological Activity

DTNB (Ellman's Reagent) is a chemical used for quantifying the amount or concentration of sulfhydryl groups. It is often used to detect free sulfhydryl groups. DTNB is also an allosteric inhibitor of dengue virus protease (NS2B-NS3Pro) and Streptomyces protease.

Chemical Information
Molecular Weight 396.35
Formula C14H8N2O8S2
CAS Number 69-78-3
Solubility (25°C) DMSO ≥ 60 mg/mL
Storage Powder          -20°C   3 years ;  4°C   2 years
In solvent       -80°C   6 months ;  -20°C   1 month
Conversion of different model animals based on BSA (PMID: 27057123)
Species Mouse Rat Rabbit Guinea pig Hamster Dog
Weight (kg) 0.02 0.15 1.8 0.4 0.08 10
Body Surface Area (m2) 0.007 0.025 0.15 0.05 0.02 0.5
Km factor 3 6 12 8 5 20
Animal A (mg/kg) = Animal B (mg/kg) multiplied by  Animal B Km
Animal A Km

For example, to modify the dose of Compound A used for a mouse (20 mg/kg) to a dose based on the BSA for a rat, multiply 20 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for Compound A of 10 mg/kg.

References

[1] Hvard Foyn, et al. Methods Mol Biol. DTNB-Based Quantification of In Vitro Enzymatic N-Terminal Acetyltransferase Activity

[2] Chi-Chang Lin, et al. Biosens Bioelectron. AuNPs@mesoSiO2 composites for SERS detection of DTNB molecule

[3] Joshua B Owen, et al. Methods Mol Biol. Measurement of oxidized/reduced glutathione ratio

[4] M R Toon, et al. Biochim Biophys Acta. Binding of DTNB to band 3 in the human red cell membrane

[5] T Nagaoka, et al. J Biochem. DTNB modification of SH groups of isocitrate dehydrogenase from Bacillus stearothermophilus purified by affinity chromatography

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Keywords: DTNB, Ellman’s Reagent; 5,5′-Dithiobis(2-nitrobenzoic acid) supplier, inhibitors, activators


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