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5857-42-1

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5857-42-1 Usage

General Description

p-Methoxybenzenesulfonic acid, also known as p-toluenesulfonic acid, is an organic compound with the chemical formula C7H8O3S. It is a white crystalline solid that is soluble in water and organic solvents. p-Methoxybenzenesulfonic acid is commonly used as a catalyst and acid in organic synthesis, particularly in esterification and transesterification reactions. It is also used as a strong acid in the production of pharmaceuticals, dyes, and polymers. Additionally, it is employed as an acid catalyst in the synthesis of biodiesel and as a stabilizer in the production of plastics. Due to its versatile and valuable properties, p-Methoxybenzenesulfonic acid has many industrial and laboratory applications.

Check Digit Verification of cas no

The CAS Registry Mumber 5857-42-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,8,5 and 7 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 5857-42:
(6*5)+(5*8)+(4*5)+(3*7)+(2*4)+(1*2)=121
121 % 10 = 1
So 5857-42-1 is a valid CAS Registry Number.

5857-42-1SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 11, 2017

Revision Date: Aug 11, 2017

1.Identification

1.1 GHS Product identifier

Product name 4-Methoxybenzenesulfonic acid

1.2 Other means of identification

Product number -
Other names Benzenesulfonic acid,p-methoxy

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:5857-42-1 SDS

5857-42-1Relevant articles and documents

Moody

, ()

Cyclodextrin-surfactant binding constant as driven force for uncomplexed cyclodextrin in equilibrium with micellar systems

Cepeda,Davi?a,García-Río,Parajó

, p. 70 - 74 (2010)

Mixed systems formed by surfactants, sodium alkylsulfonates, and β-cyclodextrin have been studied by using the solvolysis of 4-methoxybenzenesulfonil chloride (MBSC) as a chemical probe. The kinetic analysis allows us to obtain the percentage of uncomplex

Cucurbit[7]uril: Surfactant host-guest complexes in equilibrium with micellar aggregates

Pessego, Marcia,Basilio, Nuno,Moreira, Jose A.,Garcia-Rio, Luis

, p. 1342 - 1350 (2011)

In order to compare the formation of host-guest complexes between β-cyclodextrin (β-CD) or cucurbit[7]uril (CB7) and cationic surfactants we studied the hydrolysis of 4-methoxybenzenesulfonyl chloride (MBSC). The selected surfactants allowed the length of

Cornforth and Corey-Suggs reagents as efficient catalysts for sulfonation of aromatic and heteroaromatic compounds using NaHSO3 under solvent free and microwave conditions

Fatima, Touheeth,Duguta, Govardhan,Purugula, Venkanna,Yelike, Hemanth Sriram,Kamatala, Chinna Rajanna

, p. 1001 - 1006 (2020/07/27)

Cornforth and Corey-Suggs reagents Pyridinium Dichromate (PDC) and Pyridinium Chlorochromate (PCC) were explored as efficient catalysts for sulfonation of aromatic and heteroaromatic compounds using NaHSO3 in aqueous acetonitrile medium at room temperature within 1–4 h, while microwave assisted reactions took place within 1–4 min under solvent-free conditions. These observations indicate significant rate accelerations in microwave assisted reactions. which were explained due to the bulk activation of molecules induced by insitu generated high temperatures and pressures when microwaves are transmitted through reaction medium.

Aryl and alkyl sulfonic acid compounds as well as construction method adopting inorganic sulfur salt and application

-

Paragraph 0046-0049; 0050-0054, (2020/09/16)

The invention discloses aryl and alkyl sulfonic acid compounds as shown in a formula (1) and a synthesis method thereof. The method comprises the following step: aromatic iodine and an inorganic sulfur source or alkyl bromide and an inorganic sulfur source as reaction raw materials react in a solvent under the action of alkali, a catalyst or an additive to obtain a series of aryl and alkyl sulfonic acid compounds. According to the method, the aryl and alkyl sulfonic acid compounds are constructed in one step by taking an inorganic sulfur reagent as a sulfur source, so that the defect of the mode in which the aryl and alkyl sulfonic acid compounds are synthesized by taking concentrated sulfuric acid, chlorosulfonic acid or sulfur dioxide gas and the like as sulfonating reagents in the priorart is avoided. The aryl and alkyl sulfonic acid compounds developed by the invention can be used for synthesizing aryl and alkyl sulfonic acid drug analogues.

Selective Late-Stage Sulfonyl Chloride Formation from Sulfonamides Enabled by Pyry-BF4

Gómez-Palomino, Alejandro,Cornella, Josep

supporting information, p. 18235 - 18239 (2019/11/13)

Reported here is a simple and practical functionalization of primary sulfonamides, by means of a pyrylium salt (Pyry-BF4), with nucleophiles. This simple reagent activates the poorly nucleophilic NH2 group in a sulfonamide, enabling the formation of one of the best electrophiles in organic synthesis: a sulfonyl chloride. Because of the variety of primary sulfonamides in pharmaceutical contexts, special attention has been focused on the direct conversion of densely functionalized primary sulfonamides by a late-stage formation of the corresponding sulfonyl chloride. A variety of nucleophiles could be engaged in this transformation, thus permitting the synthesis of complex sulfonamides, sulfonates, sulfides, sulfonyl fluorides, and sulfonic acids. The mild reaction conditions and the high selectivity of Pyry-BF4 towards NH2 groups permit the formation of sulfonyl chlorides in a late-stage fashion, tolerating a preponderance of sensitive functionalities.

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