Cas 4750-20-3,3-nitro-4-bromobenzenesulfonamide

4750-20-3

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Basic information

Product Name: 3-nitro-4-bromobenzenesulfonamide
Synonyms: 3-nitro-4-bromobenzenesulfonamide
CAS NO:4750-20-3
Molecular Formula:
Molecular Weight: 281.087
EINECS: N/A
Product Categories: N/A

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: 3-nitro-4-bromobenzenesulfonamide(CAS DataBase Reference)
NIST Chemistry Reference: 3-nitro-4-bromobenzenesulfonamide(4750-20-3)
EPA Substance Registry System: 3-nitro-4-bromobenzenesulfonamide(4750-20-3)

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: 4750-20-3(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 4750-20-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,7,5 and 0 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 4750-20:
(6*4)+(5*7)+(4*5)+(3*0)+(2*2)+(1*0)=83
83 % 10 = 3
So 4750-20-3 is a valid CAS Registry Number.

4750-20-3Upstream product

4750-22-5 4-bromo-3-nitrobenzene-1-sulfonyl chloride

4750-20-3Downstream Products

4750-20-3Relevant academic research and scientific papers

Amplified synthesis method of 3-nitro-4-halogeno-benzenesulfonamide

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Paragraph 0022; 0024, (2017/08/29)

An amplified synthesis method of 3-nitro-4-halogeno-benzenesulfonamide is disclosed. According to the method, 4-halogeno-benzenesulfonyl chloride which is used as a raw material undergoes nitration to prepare 3-nitro-4-halogeno-benzenesulfonyl chloride; and after aminolysis, 3-nitro-4-halogeno-benzenesulfonamide is prepared. By the synthesis method provided by the invention, the synthesis route by the adoption of chlorosulfonic acid is changed, and production safety is remarkably raised. The reaction condition is milder and is easy for production control. Thus, mass production of the compound is easier to implement and realize.

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