939-95-7 Usage
Uses
Used in Pharmaceutical Industry:
3,4-Dichlorobenzenesulfonic acid is used as a key intermediate in the synthesis of various pharmaceutical compounds. Its strong acidic nature facilitates chemical reactions that are essential for the production of specific drugs, contributing to the development of new medications and therapies.
Used in Dye Industry:
In the dye industry, 3,4-dichlorobenzenesulfonic acid serves as a crucial raw material for the production of dyes. Its chemical properties allow for the creation of a range of colorants used in textiles, plastics, and other materials, enhancing their colorfastness and vibrancy.
Used in Agricultural Chemicals:
3,4-Dichlorobenzenesulfonic acid is used as a raw material in the production of herbicides and insecticides. Its strong acidic properties enable the formulation of effective agricultural chemicals that help control pests and weeds, thereby supporting crop protection and yield enhancement.
Used in Industrial Processes:
As a catalyst and pH regulator, 3,4-dichlorobenzenesulfonic acid plays a significant role in various industrial processes. Its ability to initiate or accelerate chemical reactions and regulate the pH of solutions is essential for the efficient production of a wide array of chemical products.
Safety Precautions:
Given its toxicity and potential to cause harm upon ingestion, inhalation, or contact with skin and eyes, 3,4-dichlorobenzenesulfonic acid requires careful handling. The use of appropriate safety precautions and protective equipment, such as gloves, goggles, and respirators, is essential to minimize the risk of exposure and ensure the safety of those working with this chemical compound.
Check Digit Verification of cas no
The CAS Registry Mumber 939-95-7 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 9,3 and 9 respectively; the second part has 2 digits, 9 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 939-95:
(5*9)+(4*3)+(3*9)+(2*9)+(1*5)=107
107 % 10 = 7
So 939-95-7 is a valid CAS Registry Number.
939-95-7Relevant academic research and scientific papers
Method for synthesizing felodipine intermediate 2,3-dichlorobenzaldehyde
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Paragraph 0030; 0032; 0033; 0039; 0040; 0047; 0048, (2019/10/01)
The invention discloses a method for synthesizing felodipine intermediate 2,3-dichlorobenzaldehyde. The method comprises the following steps: performing sulfonating, hydroformylation and de-sulfonation on o-dichlorobenzene to generate 2,3-dichlorobenzaldehyde; under the condition of a protonic acid, performing protonation and fracturing on urotropine to generate imine ions; using the imine ions toundergo electrophilic aromatic substitution on an aromatic ring and undergo tautomerism to generate a benzylamine derivative; performing secondary protonation and fracturing on the rest of urotropineto generate imine ions, and performing an intramolecular redox reaction to partially oxidize the benzylamine into benzylidene imine ions; and performing hydrolysis to obtain an aldehyde. The method has high selectivity, less pollution discharge and lower cost.
