5,5'-Dithiobis(2-nitrobenzoate), also known as Ellman's reagent, is a chemical compound with the formula C14H8N2O8S2. It is a yellow crystalline solid that is widely used in the determination of free sulfhydryl groups in proteins and other molecules. The reagent works by reacting with thiols to form a yellow-colored product, 2-nitro-5-thiobenzoate, which has a strong absorbance at 412 nm. This allows for the quantification of thiols in a sample. Ellman's reagent is particularly useful in biochemistry and molecular biology due to its sensitivity and specificity for thiols, making it a valuable tool for studying proteins and other biomolecules that contain free sulfhydryl groups.
552-24-9
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Basic information
- Product Name: 5,5’-dithiobis(2-nitrobenzoate)
- Synonyms: 5,5’-dithiobis(2-nitrobenzoate)
- CAS NO:552-24-9
- Molecular Formula:
- Molecular Weight: 394.342
- EINECS: N/A
- Product Categories: N/A
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Chemical Properties
- Melting Point: N/A
- Boiling Point: N/A
- Flash Point: N/A
- Appearance: N/A
- Density: N/A
- Refractive Index: N/A
- Storage Temp.: N/A
- Solubility: N/A
- CAS DataBase Reference: 5,5’-dithiobis(2-nitrobenzoate)(CAS DataBase Reference)
- NIST Chemistry Reference: 5,5’-dithiobis(2-nitrobenzoate)(552-24-9)
- EPA Substance Registry System: 5,5’-dithiobis(2-nitrobenzoate)(552-24-9)
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Safety Data
- Hazard Codes: N/A
- Statements: N/A
- Safety Statements: N/A
- WGK Germany:
- RTECS:
- HazardClass: N/A
- PackingGroup: N/A
- Hazardous Substances Data: 552-24-9(Hazardous Substances Data)
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Check Digit Verification of cas no
The CAS Registry Mumber 552-24-9 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 5,5 and 2 respectively; the second part has 2 digits, 2 and 4 respectively.Calculate Digit Verification of CAS Registry Number 552-24:
(5*5)+(4*5)+(3*2)+(2*2)+(1*4)=59
59 % 10 = 9
So 552-24-9 is a valid CAS Registry Number.
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5,5’-dithiobis(2-nitrobenzoate)
