5457-32-9 Usage
Uses
Used in Dye and Pigment Industry:
6,6'-Dinitrodiphenic acid is used as an intermediate in the production of azo dyes, which are a class of synthetic dyes known for their wide range of colors and applications in various industries, including textiles, plastics, and printing inks.
Used in Pharmaceutical Industry:
In the pharmaceutical sector, 6,6'-Dinitrodiphenic acid serves as a key intermediate in the synthesis of certain drugs, contributing to the development of new medicinal compounds.
Used in Organic Chemistry:
As a reagent in organic chemistry, 6,6'-Dinitrodiphenic acid is utilized in various chemical reactions, facilitating the synthesis of complex organic molecules for research and industrial applications.
Given its powerful oxidizing nature, it is crucial to handle 6,6'-Dinitrodiphenic acid with appropriate safety measures to mitigate the risk of skin and eye irritation, highlighting the importance of safety protocols in its applications across different industries.
Check Digit Verification of cas no
The CAS Registry Mumber 5457-32-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,4,5 and 7 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 5457-32:
(6*5)+(5*4)+(4*5)+(3*7)+(2*3)+(1*2)=99
99 % 10 = 9
So 5457-32-9 is a valid CAS Registry Number.
5457-32-9Relevant academic research and scientific papers
The Asymmetric Ullmann Coupling Reaction of Chiral Diol Diesters of 1-Bromo-2-naphthoic Acid and 2-Halo-3-nitrobenzoic Acids: Highly Diastereoselective Synthesis of Atropisomeric 6,6'-Dinitrodiphenic Acids
Miyano, Sotaro,Handa, Shigeru,Shimizu, Kunitoshi,Tagami, Katsuya,Hashimoto, Harukichi
, p. 1943 - 1947 (2007/10/02)
The copper-promoted Ullmann reaction of chiral diol diesters of 1-bromo-2-naphthoic acid induced axial dissymmetry into the newly formed 1,1'-binaphthyl bond: chiral diol, apparent net optical yield for the joining of two napphthyl units, and axial chirality induced are as follows: (S)-1,1'-binaphthyl-2,2'-diol, 71percent, S; (1S,2S)-1,2-diphenyl-1,2-ethanediol. 32percent, S; (1R,2R)-1,2-bis(ethoxycarbonyl)-1,2-ethanediol. 33percent.S; (4S,5S)-bis(hydroxymethyl)-2,2-dimethyl-1,3-dioxolane, 3.7percent, R.The reaction of (R)-1,1'-binaphthyl-2,2'-diol esters of 2-halo-3-nitrobenzoic acid gave up to 85percent net optical yield for the c oupling; the intramolecular cyclization proceeded with virtually complete diastereoselectivity to give cyclic diester of R,R-configuration in a 42percent isolated yield.This remarkable stereocontrol is ascribed to the steric requirement of the 12-membered cyclic diester structure containing rigid 1,1'-binaphthyl and 1,1'-biphenyl moiety.
