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13457-82-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 13457-82-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,4,5 and 7 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 13457-82:
104 % 10 = 4
So 13457-82-4 is a valid CAS Registry Number.



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

Version: 1.0

Creation Date: Aug 18, 2017

Revision Date: Aug 18, 2017


1.1 GHS Product identifier

Product name sodium 4-bromobenzenethiolate

1.2 Other means of identification

Product number -
Other names .4-bromo-benzenethiol, sodium salt

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:13457-82-4 SDS

13457-82-4Relevant articles and documents

Nucleophilic Reactivities of Thiophenolates

Jüstel, Patrick M.,Pignot, Cedric D.,Ofial, Armin R.

supporting information, p. 5965 - 5972 (2021/05/04)

The nucleophilic reactivities of substituted thiophenolates were determined by following the kinetics of their reactions with a series of quinone methides (reference electrophiles) in DMSO at 20 °C. The experimentally determined second-order rate constants were analyzed according to the Mayr-Patz equation log k = sN(N + E) to derive the nucleophile-specific reactivity parameters N and sN for ten thiophenolate ions.



Page/Page column 9-10, (2008/06/13)

Provided is a process for preparing thiophenol derivatives, using aromatic disulfide as a starting material, and inexpensive sodium bisulfite (NaHSO3) as a reducing agent. The process can be carried out on an industrial scale at low production costs, secures advantageous reaction conditions by using a small amount of water- soluble alcohol solvent. Further, the process can maximize the purity of the products by inhibiting reverse oxidation of the final product by the action of sulfur dioxide (SO2) produced during the preparation process, after solvent extraction of the starting materials present as impurities of the thiophenol derivatives.

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